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• How to replace only part of the match with python re.sub

  - by Arty

  I need to match two cases by one reg expression and do replacement 'long.file.name.jpg' - 'long.file.name_suff.jpg' 'long.file.name_a.jpg' - 'long.file.name_suff.jpg' I'm trying to do the following re.sub('(\_a)?\.[^\.]*$' , '_suff.',"long.file.name.jpg") But this is cut the extension '.jpg' and I'm getting long.file.name_suff. instead of long.file.name_suff.jpg I understand that this is because of [^.]*$ part, but I can't exclude it, because I have to find last occurance of '_a' to replace or last '.' Is there a way to replace only part of the match?

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• Read part of a file in PHP

  - by Johan

  I would like to read the last 1 megabyte of a MP3 file and calculate SHA1 checksum for just that part of the file. The reason that I would want this is that when I'm looking for duplicate MP3's, the header info (song title, album etc.) can differ even though it's the exakt same audio file, so I figured I would be better of to checksum a part of the file at the end instead of the whole one. Is there an efficient way of doing this?

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• Sharepoint Web Part Digital Signature

  - by pm_2

  I've created a SharePoint WebPart and am trying to upload it to the Web Part Gallery. However, when I do so, I get an error saying that it is missing a Digital Signature. How do I generate a digital signature for the web part?

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• Extract time part from TimeStamp column in ORACLE

  - by RRUZ

  Actually i' am using MyTimeStampField-TRUNC(MyTimeStampField) to extract the time part from an timestamp column in Oracle. SELECT CURRENT_TIMESTAMP-TRUNC(CURRENT_TIMESTAMP) FROM DUAL this return +00 13:12:07.100729 this work ok for me, to extract the time part from an timestamp field, but i' m wondering if exist a better way (may be using an built-in function of ORACLE) to do this? Thanks.

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• pls give reason why this java program always comes to the else part

  - by Anbu

  public class Test { public static void main(String[] args){ if (5.0 5) // (5.0<5) for both case it is going to else System.out.println("5.0 is greater than 5"); else System.out.println("else part always comes here"); /another sample/ if (5.0 == 5) System.out.println("equals"); else System.out.println("not equal"); } } can any one explain the first "if statement" why it always come to else part

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• CSS: a:link vs just a (without the :link part)

  - by Rob

  So we're required to use the following order for CSS anchor pseudo-classes a:link { color: red } a:visited { color: blue } a:hover { color: yellow } a:active { color: lime } But my question is why bother with the a:link part? Rather, is there any advantage to the above (other than perhaps clarity) over: a { color:red; } /* notice no :link part */ a:visited { color: blue; } etc.,etc.

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• Content Query Web Part - How do you OrderBy when you QueryOverride?

  - by Richard JP Le Guen

  How do you order items when you override the QueryOverride property of the Content Query Web Part? I have been given responsibility for a Web Part which extends the Content Query Web Part. The QueryOverride property of this Web Part is programmatically changed. Currently, the Web Part does not function as designed, as it does not order the items according to the appropriate field. If I add an <OrderBy> node to the QueryOverride property I get an error message along the lines of 'something wrong with the query this web part is...' and the Content Query Web Part doesn't seem to have an OrderBy property which I could use instead. The "QueryOverride property" part of this msdn article seems to suggest I should be able to add an <OrderBy> node to the QueryOverride but a number of web sites I've been reading suggest that this is not true. So, wow do you order items when you override the QueryOverride property of the Content Query Web Part?

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• Key stroke time in Openmoko or any smart phones

  - by Adi

  Dear all, I am doing a project in which I am working on security issues related to smart phones. I want to develop an authentication scheme which is based on biometrics, Every human being have a unique key-hold time,digraph time error rate. Key-Hold Time : Time difference between pressing and releasing a key . Digraph Time : Time difference between releasing one and pressing next one. Error Rate : No of times backspace is pressed. I got these metrics from a paper "Keystroke-based User Identification on Smart Phones" by Saira Zahid1, Muhammad Shahzad1, Syed Ali Khayam1,2, Muddassar Farooq1. I was planning to get the datasets to test my algorithm from openmoko phone, but the phone is mis-behaving and I am finding trouble in generating these time data-sets. If anyone can help me or tell me a good source of data sets for the 3 metrics I defined, it will be a great help. Thanks Aditya

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• best practice to obtain time zone for iPhone vs iPod Touch

  - by johnbdh

  I am creating an app that requires the users current time zone. If the device being used is an iPhone and the user has their Time Zone set to automatically change, I think I can be fairly confident that localTimeZone or systemTimezone will give me the correct time zone for the user's location. If on the other hand the device is an iPod Touch, the time zone returned by localTimeZone and systemTimeZone appears to always be whatever time zone is set in the Date & Time settings, regardless of the user's actual location. I tried using location services but, while the lat/long is being provided properly, the time zone offset in the timesStamp I am getting is always the same as whatever the user has set for their time zone setting. Any suggestions? John

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• Displaying the Time in AM/PM format in android

  - by Rahul Varma

  Hi, I am getting the time using a time picker and displaying the time in the text view using following code... private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() { public void onTimeSet(TimePicker view, int hourOfDay, int minute) { Toast.makeText(SendMail.this, "Your Appointment time is "+hourOfDay+":"+minute, Toast.LENGTH_SHORT).show(); TextView datehid = (TextView)findViewById(R.id.timehidden); datehid.setText(String.valueOf(hourOfDay)+ ":"+(String.valueOf(minute))); } }; Now, the issue is when i set the time as 8:00 pm then i get the time displayed as 20:0... I want to display the time as 8:00 pm... How can i do that???

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• How to represent datetime of deifferent time zomes in C#

  - by Mohoch

  Hi. I have a .NET WebService (written in C#), that is supposed to serve people around the world. With each request I get the user's datetime in his own time zone with the format : "yyyy/MM/dd HH:mm ZZZZ". I have to convert the string to something representing the original date and time and specifying the time zone in GMT. I have to make some logical calculations and keep it in the database. The regular DateTime doe's not support this. it does not have a property specifying the time zone. When I try to convert my string into DateTime - it simply converts it to my local time. I do not want to keep my time in UTC, because I have some logic that has to run per user by his own time. Does anyone know a C# class that handles this? Thanks!

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• Can using Chronic impair your sense of time?

  - by Trip

  Haha.. I'm using Chronic to parse the time users add in the Calendar. Where the code works and implements the right time, the end result is that, IF a user adds a time, then it has no date, and because it has no date, it will not show in results. Any ideas? def set_dates unless self.natural_date.blank? || Chronic.parse(self.natural_date).blank? # check if we are dealing with a date or a date + time if time_provided?(self.natural_date) self.date = nil self.time = Chronic.parse(self.natural_date) else self.date = Chronic.parse(self.natural_date).to_date self.time = nil end end unless self.natural_end_date.blank? || Chronic.parse(self.natural_end_date).blank? # check if we are dealing with a date or a date + time if time_provided?(self.natural_end_date) self.end_date = nil self.end_time = Chronic.parse(self.natural_end_date) else self.end_date = Chronic.parse(self.natural_end_date).to_date self.end_time = nil end end end Edit: Here is the time_provided? method: def time_provided?(natural_date_string) date_span = Chronic.parse(natural_date_string, :guess => false) (date_span.last - date_span.first).to_i == 1 end

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• Can using Chronic impair you sense of time?

  - by Trip

  Haha.. I'm using Chronic to parse the time users add in the Calendar. Where the code works and implements the right time, the end result is that, IF a user adds a time, then it has no date, and because it has no date, it will not show in results. Any ideas? def set_dates unless self.natural_date.blank? || Chronic.parse(self.natural_date).blank? # check if we are dealing with a date or a date + time if time_provided?(self.natural_date) self.date = nil self.time = Chronic.parse(self.natural_date) else self.date = Chronic.parse(self.natural_date).to_date self.time = nil end end unless self.natural_end_date.blank? || Chronic.parse(self.natural_end_date).blank? # check if we are dealing with a date or a date + time if time_provided?(self.natural_end_date) self.end_date = nil self.end_time = Chronic.parse(self.natural_end_date) else self.end_date = Chronic.parse(self.natural_end_date).to_date self.end_time = nil end end end

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• How to represent datetime of different time zomes in C#

  - by Mohoch

  I have a .NET WebService (written in C#), that is supposed to serve people around the world. With each request I get the user's datetime in his own time zone with the format : yyyy/MM/dd HH:mm ZZZZ. I have to convert the string to something representing the original date and time and specifying the time zone in GMT. I have to make some logical calculations and keep it in the database. The regular DateTime doe's not support this. it does not have a property specifying the time zone. When I try to convert my string into DateTime - it simply converts it to my local time. I do not want to keep my time in UTC, because I have some logic that has to run per user by his own time. Does anyone know a C# class that handles this?

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• php time 2 hours wrong for only 50% some users

  - by user1797802

  I am having huge issues with php time. For some reason it shows a different time (by 2 hours) to some users and the correct time to other users. The code is H:i:s d-M-y T when I view the page in a browser from my PC it tells me its 11am when infact its 9am, when I check via a browser using one my RDP's I get the correct time. Both PC's are in the country (uk) both PC's have the same system time etc. Tried setting the timezone default, but no matter what I do the server still shows some users the correct time, and other users the time 2 hour forward, any ideas? the code is echo gmdate("H:i:s d-M-y T"); <?php echo gmdate("H:i:s d-M-y T"); ?>

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• Mulitple full joins in Postgres is slow

  - by blast83

  I have a program to use the IMDB database and am having very slow performance on my query. It appears that it doesn't use my where condition until after it materializes everything. I looked around for hints to use but nothing seems to work. Here is my query: SELECT * FROM name as n1 FULL JOIN aka_name ON n1.id = aka_name.person_id FULL JOIN cast_info as t2 ON n1.id = t2.person_id FULL JOIN person_info as t3 ON n1.id = t3.person_id FULL JOIN char_name as t4 ON t2.person_role_id = t4.id FULL JOIN role_type as t5 ON t2.role_id = t5.id FULL JOIN title as t6 ON t2.movie_id = t6.id FULL JOIN aka_title as t7 ON t6.id = t7.movie_id FULL JOIN complete_cast as t8 ON t6.id = t8.movie_id FULL JOIN kind_type as t9 ON t6.kind_id = t9.id FULL JOIN movie_companies as t10 ON t6.id = t10.movie_id FULL JOIN movie_info as t11 ON t6.id = t11.movie_id FULL JOIN movie_info_idx as t19 ON t6.id = t19.movie_id FULL JOIN movie_keyword as t12 ON t6.id = t12.movie_id FULL JOIN movie_link as t13 ON t6.id = t13.linked_movie_id FULL JOIN link_type as t14 ON t13.link_type_id = t14.id FULL JOIN keyword as t15 ON t12.keyword_id = t15.id FULL JOIN company_name as t16 ON t10.company_id = t16.id FULL JOIN company_type as t17 ON t10.company_type_id = t17.id FULL JOIN comp_cast_type as t18 ON t8.status_id = t18.id WHERE n1.id = 2003 Very table is related to each other on the join via foreign-key constraints and have indexes for all the mentioned columns. The query plan details: "Hash Left Join (cost=5838187.01..13756845.07 rows=15579622 width=835) (actual time=146879.213..146891.861 rows=20 loops=1)" " Hash Cond: (t8.status_id = t18.id)" " -> Hash Left Join (cost=5838185.92..13542624.18 rows=15579622 width=822) (actual time=146879.199..146891.833 rows=20 loops=1)" " Hash Cond: (t10.company_type_id = t17.id)" " -> Hash Left Join (cost=5838184.83..13328403.29 rows=15579622 width=797) (actual time=146879.165..146891.781 rows=20 loops=1)" " Hash Cond: (t10.company_id = t16.id)" " -> Hash Left Join (cost=5828372.95..10061752.03 rows=15579622 width=755) (actual time=146426.483..146429.756 rows=20 loops=1)" " Hash Cond: (t12.keyword_id = t15.id)" " -> Hash Left Join (cost=5825164.23..6914088.45 rows=15579622 width=731) (actual time=146372.411..146372.529 rows=20 loops=1)" " Hash Cond: (t13.link_type_id = t14.id)" " -> Merge Left Join (cost=5825162.82..6699867.24 rows=15579622 width=715) (actual time=146372.366..146372.472 rows=20 loops=1)" " Merge Cond: (t6.id = t13.linked_movie_id)" " -> Merge Left Join (cost=5684009.29..6378956.77 rows=15579622 width=699) (actual time=144019.620..144019.711 rows=20 loops=1)" " Merge Cond: (t6.id = t12.movie_id)" " -> Merge Left Join (cost=5182403.90..5622400.75 rows=8502523 width=687) (actual time=136849.731..136849.809 rows=20 loops=1)" " Merge Cond: (t6.id = t19.movie_id)" " -> Merge Left Join (cost=4974472.00..5315778.48 rows=8502523 width=637) (actual time=134972.032..134972.099 rows=20 loops=1)" " Merge Cond: (t6.id = t11.movie_id)" " -> Merge Left Join (cost=1830064.81..2033131.89 rows=1341632 width=561) (actual time=63784.035..63784.062 rows=2 loops=1)" " Merge Cond: (t6.id = t10.movie_id)" " -> Nested Loop Left Join (cost=1417360.29..1594294.02 rows=1044480 width=521) (actual time=59279.246..59279.264 rows=1 loops=1)" " Join Filter: (t6.kind_id = t9.id)" " -> Merge Left Join (cost=1417359.22..1429787.34 rows=1044480 width=507) (actual time=59279.222..59279.224 rows=1 loops=1)" " Merge Cond: (t6.id = t8.movie_id)" " -> Merge Left Join (cost=1405731.84..1414378.65 rows=1044480 width=491) (actual time=59121.773..59121.775 rows=1 loops=1)" " Merge Cond: (t6.id = t7.movie_id)" " -> Sort (cost=1346206.04..1348817.24 rows=1044480 width=416) (actual time=58095.230..58095.231 rows=1 loops=1)" " Sort Key: t6.id" " Sort Method: quicksort Memory: 17kB" " -> Hash Left Join (cost=172406.29..456387.53 rows=1044480 width=416) (actual time=57969.371..58095.208 rows=1 loops=1)" " Hash Cond: (t2.movie_id = t6.id)" " -> Hash Left Join (cost=104700.38..256885.82 rows=1044480 width=358) (actual time=49981.493..50006.303 rows=1 loops=1)" " Hash Cond: (t2.role_id = t5.id)" " -> Hash Left Join (cost=104699.11..242522.95 rows=1044480 width=343) (actual time=49981.441..50006.250 rows=1 loops=1)" " Hash Cond: (t2.person_role_id = t4.id)" " -> Hash Left Join (cost=464.96..12283.95 rows=1044480 width=269) (actual time=0.071..0.087 rows=1 loops=1)" " Hash Cond: (n1.id = t3.person_id)" " -> Nested Loop Left Join (cost=0.00..49.39 rows=7680 width=160) (actual time=0.051..0.066 rows=1 loops=1)" " -> Nested Loop Left Join (cost=0.00..17.04 rows=3 width=119) (actual time=0.038..0.041 rows=1 loops=1)" " -> Index Scan using name_pkey on name n1 (cost=0.00..8.68 rows=1 width=39) (actual time=0.022..0.024 rows=1 loops=1)" " Index Cond: (id = 2003)" " -> Index Scan using aka_name_idx_person on aka_name (cost=0.00..8.34 rows=1 width=80) (actual time=0.010..0.010 rows=0 loops=1)" " Index Cond: ((aka_name.person_id = 2003) AND (n1.id = aka_name.person_id))" " -> Index Scan using cast_info_idx_pid on cast_info t2 (cost=0.00..10.77 rows=1 width=41) (actual time=0.011..0.020 rows=1 loops=1)" " Index Cond: ((t2.person_id = 2003) AND (n1.id = t2.person_id))" " -> Hash (cost=463.26..463.26 rows=136 width=109) (actual time=0.010..0.010 rows=0 loops=1)" " -> Index Scan using person_info_idx_pid on person_info t3 (cost=0.00..463.26 rows=136 width=109) (actual time=0.009..0.009 rows=0 loops=1)" " Index Cond: (person_id = 2003)" " -> Hash (cost=42697.62..42697.62 rows=2442362 width=74) (actual time=49305.872..49305.872 rows=2442362 loops=1)" " -> Seq Scan on char_name t4 (cost=0.00..42697.62 rows=2442362 width=74) (actual time=14.066..22775.087 rows=2442362 loops=1)" " -> Hash (cost=1.12..1.12 rows=12 width=15) (actual time=0.024..0.024 rows=12 loops=1)" " -> Seq Scan on role_type t5 (cost=0.00..1.12 rows=12 width=15) (actual time=0.012..0.014 rows=12 loops=1)" " -> Hash (cost=31134.07..31134.07 rows=1573507 width=58) (actual time=7841.225..7841.225 rows=1573507 loops=1)" " -> Seq Scan on title t6 (cost=0.00..31134.07 rows=1573507 width=58) (actual time=21.507..2799.443 rows=1573507 loops=1)" " -> Materialize (cost=59525.80..63203.88 rows=294246 width=75) (actual time=812.376..984.958 rows=192075 loops=1)" " -> Sort (cost=59525.80..60261.42 rows=294246 width=75) (actual time=812.363..922.452 rows=192075 loops=1)" " Sort Key: t7.movie_id" " Sort Method: external merge Disk: 24880kB" " -> Seq Scan on aka_title t7 (cost=0.00..6646.46 rows=294246 width=75) (actual time=24.652..164.822 rows=294246 loops=1)" " -> Materialize (cost=11627.38..12884.43 rows=100564 width=16) (actual time=123.819..149.086 rows=41907 loops=1)" " -> Sort (cost=11627.38..11878.79 rows=100564 width=16) (actual time=123.807..138.530 rows=41907 loops=1)" " Sort Key: t8.movie_id" " Sort Method: external merge Disk: 3136kB" " -> Seq Scan on complete_cast t8 (cost=0.00..1549.64 rows=100564 width=16) (actual time=0.013..10.744 rows=100564 loops=1)" " -> Materialize (cost=1.08..1.15 rows=7 width=14) (actual time=0.016..0.029 rows=7 loops=1)" " -> Seq Scan on kind_type t9 (cost=0.00..1.07 rows=7 width=14) (actual time=0.011..0.013 rows=7 loops=1)" " -> Materialize (cost=412704.52..437969.09 rows=2021166 width=40) (actual time=3420.356..4278.545 rows=1028995 loops=1)" " -> Sort (cost=412704.52..417757.43 rows=2021166 width=40) (actual time=3420.349..3953.483 rows=1028995 loops=1)" " Sort Key: t10.movie_id" " Sort Method: external merge Disk: 90960kB" " -> Seq Scan on movie_companies t10 (cost=0.00..35214.66 rows=2021166 width=40) (actual time=13.271..566.893 rows=2021166 loops=1)" " -> Materialize (cost=3144407.19..3269057.42 rows=9972019 width=76) (actual time=65485.672..70083.219 rows=5039009 loops=1)" " -> Sort (cost=3144407.19..3169337.23 rows=9972019 width=76) (actual time=65485.667..68385.550 rows=5038999 loops=1)" " Sort Key: t11.movie_id" " Sort Method: external merge Disk: 735512kB" " -> Seq Scan on movie_info t11 (cost=0.00..212815.19 rows=9972019 width=76) (actual time=15.750..15715.608 rows=9972019 loops=1)" " -> Materialize (cost=207925.01..219867.92 rows=955433 width=50) (actual time=1483.989..1785.636 rows=429401 loops=1)" " -> Sort (cost=207925.01..210313.59 rows=955433 width=50) (actual time=1483.983..1654.165 rows=429401 loops=1)" " Sort Key: t19.movie_id" " Sort Method: external merge Disk: 31720kB" " -> Seq Scan on movie_info_idx t19 (cost=0.00..15047.33 rows=955433 width=50) (actual time=7.284..221.597 rows=955433 loops=1)" " -> Materialize (cost=501605.39..537645.64 rows=2883220 width=12) (actual time=5823.040..6868.242 rows=1597396 loops=1)" " -> Sort (cost=501605.39..508813.44 rows=2883220 width=12) (actual time=5823.026..6477.517 rows=1597396 loops=1)" " Sort Key: t12.movie_id" " Sort Method: external merge Disk: 78888kB" " -> Seq Scan on movie_keyword t12 (cost=0.00..44417.20 rows=2883220 width=12) (actual time=11.672..839.498 rows=2883220 loops=1)" " -> Materialize (cost=141143.93..152995.81 rows=948150 width=16) (actual time=1916.356..2253.004 rows=478358 loops=1)" " -> Sort (cost=141143.93..143514.31 rows=948150 width=16) (actual time=1916.344..2125.698 rows=478358 loops=1)" " Sort Key: t13.linked_movie_id" " Sort Method: external merge Disk: 29632kB" " -> Seq Scan on movie_link t13 (cost=0.00..14607.50 rows=948150 width=16) (actual time=27.610..297.962 rows=948150 loops=1)" " -> Hash (cost=1.18..1.18 rows=18 width=16) (actual time=0.020..0.020 rows=18 loops=1)" " -> Seq Scan on link_type t14 (cost=0.00..1.18 rows=18 width=16) (actual time=0.010..0.012 rows=18 loops=1)" " -> Hash (cost=1537.10..1537.10 rows=91010 width=24) (actual time=54.055..54.055 rows=91010 loops=1)" " -> Seq Scan on keyword t15 (cost=0.00..1537.10 rows=91010 width=24) (actual time=0.006..14.703 rows=91010 loops=1)" " -> Hash (cost=4585.61..4585.61 rows=245461 width=42) (actual time=445.269..445.269 rows=245461 loops=1)" " -> Seq Scan on company_name t16 (cost=0.00..4585.61 rows=245461 width=42) (actual time=12.037..309.961 rows=245461 loops=1)" " -> Hash (cost=1.04..1.04 rows=4 width=25) (actual time=0.013..0.013 rows=4 loops=1)" " -> Seq Scan on company_type t17 (cost=0.00..1.04 rows=4 width=25) (actual time=0.009..0.010 rows=4 loops=1)" " -> Hash (cost=1.04..1.04 rows=4 width=13) (actual time=0.006..0.006 rows=4 loops=1)" " -> Seq Scan on comp_cast_type t18 (cost=0.00..1.04 rows=4 width=13) (actual time=0.002..0.003 rows=4 loops=1)" "Total runtime: 147055.016 ms" Is there anyway to force the name.id = 2003 before it tries to join all the tables together? As you can see, the end result is 4 tuples but it seems like it should be a fast join by using the available index after it limited it down with the name clause, although very complex.

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• Windows XP SP3 - Upgrade - No longer part of workgroup

  - by dbasnett

  When I woke up this morning I decided to have a really lousy day. For a long time I have been telling auto updater to remind me later about installing SP3. But not this morning... It looked good, until I tried to access my NAS. Can't connect, can't see it, nothing. The other computers can see it, so it is my PC. Oh, and they can no longer see me. It turns out the only thing I can see is the printer. So if you know what wonderful thing Microsoft decided to change during the upgrade (oxymoron in my opinion), I would be grateful. Short of turning on all of the services I have tried so many things, and rebooted so often, that I am just sick of it.

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• Limit the amount of data that can be stored in a folder on Ubuntu Server 12.04?

  - by dougoftheabaci

  I'm in the process of building my first server. It's up, it's running, I'm transferring copious amounts of data away from my horrid little Drobo (DO NOT BUY ONE OF THESE, EVER). However, there's one thing I have yet to do: I'd like to set it up for Time Machine backups as well. I've seen all the guides and I have some idea of how to set the whole thing up, but the issue is that Time Machine will just fill up as much space as you let it. So if I let it lose in my 8 TB zpool it'll slowly consume every last available sector. This, of course, is not acceptable. I have a folder at the root of my zpool called "ZFS Time Machine" and I would like to limit it to 1 TB (all I need for backup purposes). However, I have no idea how to do that. Is this possible? I can continue using a small external hard drive attached via FW800 if I have to but I'd much rather prefer putting everything on my server.

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• Clone a Red Hat RAID as part of a disaster recovery plan

  - by Campo

  I am looking for recommendations to clone a Red Hat mirrored raid to a single hard drive located in the same machine. The idea is if the servers hardware ever has an issue we have a similar hardware machine ready to go. All we would have to do is pop in the cloned drive. If the servers RAID ever failed we could just switch to the single drive to maintain uptime and restore the original configuration on the spare server with a backup. This is a restaurant and they are open 7 days a week. We do have time from 12:am to 9:00am to perform the necessary steps for a clone and we talking about under 10 Gigs of information. There is a database on the server. I have looked into Rsync and Clonezilla. But I am just not confident either is capable of completing the task I want. Looking for some suggestions and possibly a step by step if you could be so kind.

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• Enable DOM Access for Silverlight Web Part in Sharepoint 2010

  - by Bhaskar

  I am hosting a silverlight 3.0 control on my Sharepoint 2010 page. I am using the built-in SilverlightWebPart web part, where I have provided the path for .xap file. Its displaying properly, but when I try to access the System.Windows.Browser, its throwing an error. My code is: public static string GetQueryString(string key) { try { var documentQueryString = (Dictionary<string, string>)System.Windows.Browser.HtmlPage.Document.QueryString; if (documentQueryString.ContainsKey(key)) { return documentQueryString[key].ToString(); } } catch (Exception ex) { return ex.Message; } return string.Empty; } The error I am getting is: The DOM/scripting bridge is disabled. How do I enable this? I know if I host this in a ASP.NET page, I can add the param - <param name="enablehtmlaccess" value="true"/>. I have tried putting this webpart in a "content editor web part", and I have embedded the object tag to call the .xap file and its working totally fine. I need to make it work using the built-in Silverlight web part.

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• Subset a data.frame by list and apply function on each part, by rows

  - by aL3xa

  This may seem as a typical plyr problem, but I have something different in mind. Here's the function that I want to optimize (skip the for loop). # dummy data set.seed(1985) lst <- list(a=1:10, b=11:15, c=16:20) m <- matrix(round(runif(200, 1, 7)), 10) m <- as.data.frame(m) dfsub <- function(dt, lst, fun) { # check whether dt is `data.frame` stopifnot (is.data.frame(dt)) # check if vectors in lst are "whole" / integer # vector elements should be column indexes is.wholenumber <- function(x, tol = .Machine$double.eps^0.5) abs(x - round(x)) < tol # fall if any non-integers in list idx <- rapply(lst, is.wholenumber) stopifnot(idx) # check for list length stopifnot(ncol(dt) == length(idx)) # subset the data subs <- list() for (i in 1:length(lst)) { # apply function on each part, by row subs[[i]] <- apply(dt[ , lst[[i]]], 1, fun) } # preserve names names(subs) <- names(lst) # convert to data.frame subs <- as.data.frame(subs) # guess what =) return(subs) } And now a short demonstration... actually, I'm about to explain what I primarily intended to do. I wanted to subset a data.frame by vectors gathered in list object. Since this is a part of code from a function that accompanies data manipulation in psychological research, you can consider m as a results from personality questionnaire (10 subjects, 20 vars). Vectors in list hold column indexes that define questionnaire subscales (e.g. personality traits). Each subscale is defined by several items (columns in data.frame). If we presuppose that the score on each subscale is nothing more than sum (or some other function) of row values (results on that part of questionnaire for each subject), you could run: > dfsub(m, lst, sum) a b c 1 46 20 24 2 41 24 21 3 41 13 12 4 37 14 18 5 57 18 25 6 27 18 18 7 28 17 20 8 31 18 23 9 38 14 15 10 41 14 22 I took a glance at this function and I must admit that this little loop isn't spoiling the code at all... BUT, if there's an easier/efficient way of doing this, please, let me know!

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• How to access GMT time using VC

  - by sijith

  In my project i am using GetLocalTime() and GetSystemTime and set the current time into registry. But my problem is when i am changing the time of my machine the changed time only saving to registry. Is there any chance to access the GMT time so that its independent of machine and nobody can change the time.. Please give some help

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• Which run-time charting tools produce the best time axes?

  - by eft

  I need to generate and embed a time series chart into an ASP.NET application. Most run-time charting tools generate poor time axes, especially if the time scale is dynamic ie the user may choose to view data over a time scale of days, weeks, months or years. I'm looking for recommended tools that can be integrated into my app. Two that show promise are Chart Director and Google's annotated timeline visualization. Both are quite different in their implementation and have pros/cons.

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• UTC time stamp on Windows

  - by Arman

  I have a buffer with the UTC time stamp in C, I broadcast that buffer after every ten seconds. The problem is that the time difference between two packets is not consistent. After 5 to 10 iterations the time difference becomes 9, 11 and then again 10. Kindly help me to sort out this problem. I am using <time.h> for UTC time.

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• Display DateTime in GridView using user's time

  - by Rachel Martin

  I have a DateTime stored in UTC time that I'd like to display to the user in their local time from within a GridView control. How can I convert my DateTime to the user's time (not my server's local time)? Here is my current field as it appears in the GridView Columns collection: <asp:BoundField DataField="RunTime" HeaderText="Run Time" SortExpression="RunTime" DataFormatString="{0:f}" />

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