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• What would be the datastructure in following scenario? (Stack with maximum)

  - by Abhishek Jain

  Please note that there is no limitation of memory. I need to insert int from 1 to 1000. I can do the each of the following operations in constant order of time: push():adds to the top pop():removes the top element getMax(): returns the max element Please suggest me appropriate datastructure.

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• How can I get file size in perl before uploading it?

  - by zeina

  I want to get file size I'm doing this: my $filename=$query->param("upload_file"); my $filesize = (-s $filename) ; print "Size: $filesize "; Yet it is not working.Note that I did not upload the file. I want to check its size before uploading it. so to limit it to max of 1 MB.

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• XNA, subtract 2 meshes at runtime?

  - by OSaad

  Hi, i wanted to know how to edit 3d models' vertices in XNA at runtime, i wana do something like the 3d max subtract feature where u put 2 models together and delete the intersecting vertices of 1 of them, more like carving one mesh with the other. see this if i wasn't clear anyway so any pointers on how to edit vertices at runtime or any help is really really appreciated. thanks

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• running query and putting result into a variable ACCESS

  - by every_answer_gets_a_point

  i am running a query from vba editor access: "select max(somerow) from sometable" i want to put the result of this query into a variable. how do i do it?

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• How to select a random record from a MySQL database?

  - by Bruce

  I am using the following query to select 1 random record - SELECT name FROM table WHERE id >= (SELECT FLOOR( MAX(id) * RAND()) FROM table ) ORDER BY id LIMIT 1 but it gives me the same set of records every time I call it. How do I get better random record?

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• How to switch from VARCHAR to TEXT in SQL 2000?

  - by MatthewMartin

  What do I need to consider before I switch a bunch of fields from VARCHAR(bignumber) to TEXT? Aside from performance, and sometime in the far future TEXT will be deprecated, and aside from the fact that it looks like I need to drop and recreate the table to alter the column's data type? This is for SQL 2000-- I can't do VARCHAR(max) and VARCHAR(8000) isn't large enough.

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• Details to log when starting an application

  - by Karl

  To help support and anyone who may use one of my applications I tend to log a few things during the application startup. Currently I log: Start Time App Name App Author App Version App Classpath Current working directory Java vendor Java version Max heap size Taking into consideration this application may be used / supported by a whole host of people can anyone think of any other vital details which we / others should log for good practice?

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• merging and manupulating files in matlab

  - by Paul

  Is there a way to run a loop through a folder and process like 30 files for a month and give the average,max of each columns and write in one excel sheet or so?? I have 30 files of size [43200 x 30] I ran a different matlab scrip to generate them so the names are easy File_2010_04_01.xls , File_2010_04_02.xls ..... and so on I cannot merge them as each are 20mbs and matlab would crash. Any ideas? Thanks

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• Will First() perform the OrderBy()?

  - by Martin

  Is there any difference in (asymptotic) performance between Orders.OrderBy(order => order.Date).First() and Orders.Where(order => order.Date == Orders.Max(x => x.Date)); i.e. will First() perform the OrderBy()? I'm guessing no. MSDN says enumerating the collection via foreach och GetEnumerator does but the phrasing does not exclude other extensions.

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• oracle using index even though there is no filter criteeria specified

  - by Kaushik

  In this query: SELECT WTTEMPLATE.TEMPLATEuID, MAX (WTTRX.VALUEDATE) AS template_last_use_date FROM wttemplate, wttrx WHERE WTTEMPLATE.TEMPLATEID = WTTRX.TEMPLATEID(+) AND WTTEMPLATE.CUSTID = WTTRX.CUSTID GROUP BY WTTEMPLATE.TEMPLATEuID The explain plan shows:index fast full scan using indexes on WTTEMPLATE.TEMPLATEID and (WTTRX.TEMPLATEID,WTTRX.CUSTID). My question is this: I have not specified any filter criteria , so how can it use indexes? It should do full scan...right?

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• Oracle : select maximum value from different comulms of the same row

  - by gregseth

  The whole question is pretty much in the title. For each row of the table I'd like to select the maximum of a subset of columns. For example, from this table name m1 m2 m3 m4 A 1 2 3 4 B 6 3 4 5 C 1 5 2 1 the result would be name max A 4 B 6 C 5 The query must be compatible oracle 8i. Thanks.

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• Excel Functions

  - by dwyane

  =MAX(SUM(A1:A5)) How do i incorporate the above formula into =IF( AND( $H$14<F22, F22<=($H$14+$H$15) ), $I$15, IF( AND( $H$14+$H$15<F22, F22<($H$14+$H$15+$H$16) ), $I$16, IF( AND( $H$14+$H$15+$H$16<F22, F22<=($H$14+$H$15+$H$16+$H$17) ), $I$17, $I$14 ) ) ) It keeps running a circular reference error. Help! The sum value shouldnt exceed 150. If exceed, then replace the cell with zero value.

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• TSQL: How can I update the value of an xml tag with the value of an xml tag from another related tab

  - by halfjust

  Hello, How can I update the value of an xml tag with the value of an xml tag from another related table? something like this: UPDATE v2 SET [xml].modify ('replace value of (//TAG1/text())[1] with "CAST(v1.[xml].query(''//TAG2'') AS NVARCHAR(MAX))"') FROM table2 v2, table1 v1 WHERE v2.id = v1.id Thanks

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• Tomcat memory issue

  - by user305210

  Hello, I have noticed that my application that is running on Tomcat 5 starts with 1gig of memory and as soon as it starts receiving requests from client, the memory starts dropping until it is down to 100MBs and troubles start from there. I am looking at /manager/status page of tomcat under JVM section where "Free Memory", "Total Memory", "Max Memory" is listed. Is this an indicator of memory leak? Memory does not seem to be freed-up automatically even if there are no requests coming from client machines.

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• Convert ten character classification string into four character one in C#

  - by mare

  What's the best way to convert (to hash) a string like 3800290030, which represents an id for a classification into a four character one like 3450 (I need to support at max 9999 classes). The hash needs to be unique and always the same for the same an input. If possible, the hash should also be reversible (but this is not required).

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• How can I create Min stl priority_queue?

  - by eriks

  The default stl priority queue is a Max one (Top function returns the largest element). Say, for simplicity, that it is a priority queue of int values.

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• RegEx Pattern that matches positive or negative values (e.g "1.2", "-2.8", "7.8", -22.8")

  - by tzippy

  decimal seperator is a dot, followed by max one digit! No range specified. Thanks guys!

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• SQLAlchemy introspection

  - by Shaman

  What I am trying to do is to get from SqlAlchemy entity definition all it's Column()'s, determine their types and constraints, to be able to pre-validate, convert data and display custom forms to user. How can I introspect it? Example: class Person(Base): ''' Represents Person ''' __tablename__ = 'person' # Columns id = Column(String(8), primary_key=True, default=uid_gen) title = Column(String(512), nullable=False) birth_date = Column(DateTime, nullable=False) I want to get this id, title, birth date, determine their restrictions (such as title is string and max length is 512 or birth_date is datetime etc) Thank you

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• Image classification: recognizing various features of many buildings from images

  - by el chief

  so, let's say i have the long/lat or address of many buildings can get satellite images, "street view", and perhaps 3d/perspective views of buildings. want to find: height, number of floors, floor area (max building footprint) of the building. about 200k buildings. Is there a library for recognizing buildings from satellite shots or pictures? Kind of like face detection I suppose. Any other suggestions? Thanks!

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• Increment my id in my insert request

  - by Mercer

  hello, i have a table with some rows. idClient, name, adress,country,... i want to know how i can do an insert into this table with auto increment my idClient in my sql request..? Thx. edit: i want do a request like this insert into Client values((select max(idClient),...)

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• What is does this error mean when trying to import video in processing?

  - by Adam

  quicktime.qdQDException[QTJava:7.6.6g], -3954=Unknown Error Code, QT.vers:7668000 I'm using osx.... is video processing inherently slow in processing? It's really choppy. Would it be faster if done in Max?

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• .htaccess & mod_rewrite for passing GET parameters

  - by Joel Alejandro

  Currently I use this to pass GET parameters on an "elegant" way: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^([^/]*)/$ index.php?module=$1 [L] RewriteRule ^([^/]*)/([^/]*)/$ index.php?module=$1&object=$2 [L] RewriteRule ^([^/]*)/([^/]*)/([^/]*)/$ index.php?module=$1&object=$2&submodule=$3 [L] This works great for 3 parameters max., (and I'm sure it's seriously ugly). Any way to do the same thing, for n-paremeters?

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• What's the easy way to test 304 reponses?

  - by John Mee

  I need to test my 304 responses. Is there an easy way to modify the max-age value of the cache-control header before it goes out?

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• How to change the title bar of a window in Mac OS X

  - by macdever

  I am trying to change the titlebar of a window in Mac OS X. To be specific I am trying to this with firefox. And I want to draw/put a bitmap on the title bar and also min, max, and close buttons. Also I found this file which might be helpful: http://people.mozilla.com/~chofmann/l10n/tree/mozilla/widget/src/cocoa/nsCocoaWindow.mm I can see that they have the code to do custom shading or color change. Thanks

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• i want to insert values from table1 to table2 with incremantal value

  - by adnan

  i tried something like this but the id value is not changing, getting the value for first record and set the value for all rest... insert into table1 (Id,b,c,d) (select (select max(Id)+1 from table1),x,y,z from table2 where... )

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