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  • C# (ADO.Net): Defining DateDiff for a calculated column in a datatable

    - by Nir
    I have the column DateTimeExpired, and I would like to create another column called "Expired" which will show "Yes" or "No" according to the expiration date - "Yes" if the date has already passed. I wrote this: DataColumn colExpirationDate = new DataColumn("DateTimeExpired", typeof(DateTime)); DataColumn colExpired = new DataColumn("Expired", typeof(string), "IIF(DateDiff(DateTimeExpired, date())>= 0,'No','Yes')"); But I get an exception "The expression contains undefined function call DateDiff()." (please note that I always want to get the row, no matter if it's expired or not) How do I set the column's text to the correct form? Thanks!

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  • ASP.Net: Adding client side onClick to a HyperlinkField in GridView

    - by Nir
    I have an existing GridView which contains the field "partner name". It is sortable by partner name. Now I need to change the Partner Name field and in some condition make it clickable and alert() something. The existing code is: <asp:GridView ID="gridViewAdjustments" runat="server" AutoGenerateColumns="false" AllowSorting="True" OnSorting="gridView_Sorting" OnRowDataBound="OnRowDataBoundAdjustments" EnableViewState="true"> <asp:BoundField DataField="PartnerName" HeaderText="Name" SortExpression="PartnerName"/> I've added the column: <asp:hyperlinkfield datatextfield="PartnerName" SortExpression="PartnerName" headertext="Name" ItemStyle-CssClass="text2"/> which enables me to control the CSS and sort. However, I can't find how to add a client side javascript function to it. I found that adding : <asp:TemplateField HeaderText="Edit"> <ItemTemplate> <a id="lnk" runat="server">Edit</a> enable me to access "lnk" by id and add to its attributes. However, I lose the Sort ability. What's the correct solution in this case? Thanks.

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  • problem with codeigniter using odbc database driver

    - by Nir Gavish
    i’ve run into a curious problem with codeigniter's odbc driver. i’m connecting from a linux machine to an MSSQL 2008 machine using FreeTDS. while i get that the ‘num_rows’ function always returns -1, and that is fully a database/driver issue - for some reason when i try to create a -result(), the whole application crashes (error 500, sometimes just a blank page), if i’m lucky, i get an error message informing me that the application died because it tried to allocated 2 terrabytes of memory(!). This happens irregularly, ie: every few refreshes. sometimes it runs fine, sometimes the page returns error 500 and sometimes it gives the memory allocation error - in any case it’s not really something that can be reproduced with percision, and the queries are SUPER simple. ideas anyone?

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  • Defining DateDiff for a calculated column in a datatable

    - by Nir
    I have the column DateTimeExpired, and I would like to create another column called "Expired" which will show "Yes" or "No" according to the expiration date - "Yes" if the date has already passed. I wrote this: DataColumn colExpirationDate = new DataColumn("DateTimeExpired", typeof(DateTime)); DataColumn colExpired = new DataColumn("Expired", typeof(string), "IIF(DateDiff(DateTimeExpired, date())>= 0,'No','Yes')"); But I get an exception "The expression contains undefined function call DateDiff()." (please note that I always want to get the row, no matter if it's expired or not) How do I set the column's text to the correct form?

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  • C# - Using a copy of Session-stored variables instead of reference

    - by Nir
    I have an asp:ImageButton with OnClick="Btn_OnClick". In Btn_OnClick I have this line: DataTable dtTable = (DataTable)Session["someSessionKey"] and dtTable is altered in the function. I've noticed that if the button's clicked more than once, the dtTable I take from the session contains the altered table, probably meaning dtTable is not a copy but a reference of the session variable. How can I alter a copy of Session["someSessionKey"], and not the actual value? Thanks!

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  • reStructuredText tool support

    - by Chen Levy
    I love reStructuredText, however the tools that support it are scattered all over the Internet. The official tool list is incomplete and/or outdated, and can be updated only via commit privileges. For some time there was a comprehensive list at the Wikipedia reStructuredText page, but this apparently "may not meet the notability guideline for web content" and is scheduled for removal. So to put it in a question form: What tool support can one expect to find when working with reStructuredText, e.g. text editors, Wiki software, converters to and from reStructuredText etc.?

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  • Is there a fingerprint reader api/sdk?

    - by Nir
    I need to read the user's fingerprint from my application. What I really want is a simple SDK that works with a lot of inexpensive fingerprint readers but I can deal with something that works only with one specific model if that model is cheap and available worldwide. And it has to be royalty-free, I can pay for a development license but if I have to pay for each installation I just can't use it. What I'm doing has no relation to login or encryption, so the software included with the reader will probably be useless to me.

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  • asp:RadioButtonList doesn't set correct selected item on load

    - by Nir
    I have this code: <asp:RadioButtonList ID="rblExpDate" runat="server" > <asp:ListItem Selected="True" Text="No expiration date"></asp:ListItem> <asp:ListItem Text="Expires on:"></asp:ListItem> </asp:RadioButtonList> that I would like to be always, on page load, to mark the first option ("no expiration date"). However, if the user marks the second option and reloads, the second option is selected, even though I do this on page load: rblExpDate.Items[0].Selected = true; rblExpDate.SelectedIndex = 0; Appreciate your help!

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  • Monitoring used connections on mysql to debug 'too many connections'

    - by Nir
    On LAMP production server I get the 'too many connections' error from MYSQL occasionally, I want to add monitoring to find if the reason is that I exceed the max-connections limit. My question: How can I query from mysql or from mysqladmin the current number of used connections? (I noticed that show status gives total connections and not the currently used ones.)

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  • Pear Mail + Pear mail-mime URLs corrupted

    - by Nir
    I'm using pear mail and pear mail mime to send UTF8 HTML emails. When I input urls such as //www.site.com.img they appear in the email as http:///www.site.com.img (note the three slashes). Anyone know how to use //www urls with pear-mail/mime ? To duplicate you can use the following code (taken from here) with change <?php require_once 'Mail.php'; require_once 'Mail\mime.php'; $message = new Mail_mime(); $text = 'Hello this is the Plain email'; $html = '<b>Hello</b> <img src="//www.site.com/img.src"/><hr />This is the HTML email.'; $message->setTXTBody($text); $message->setHTMLBody($html); $body = $message->get(); $extraheaders = array('From' => '[email protected]', 'Subject' => 'Subject'); $headers = $message->headers($extraheaders); $mail = Mail::factory('mail'); $mail->send('[email protected]', $headers, $body); ?> You will see the image as http:///www.site.com/img.src

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  • .NET 3.5: Dynamically adding classes without recompiling

    - by Nir
    I'd like to build an infrastructure that will monitor a server and check ping, response time, and more. The catch is that future checks (for example: does a certain file exist) will be added without recompiling the infrastructure. How do I build it in such a way that will enable me to attach inherited classes with different functionality, and execute them without recompiling? Thanks!

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  • API for parse/update UNIX configuration files

    - by Chen Levy
    Unix configuration files come in all shapes and forms. I know that Webmin has a Perl API that makes it easy to parse and modify most common configuration pro grammatically, while preserving changes that might have been made by hand. Are there any other libraries that has similar functionality, perhaps for other languages (Python, Ruby, C, C++, etc)?

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  • htaccess mod rewrite changes http://www to http:/www

    - by Nir
    I want to replace calls like this: www.mysite.com/sub/file.php?param1=x&param2=http://www.someurl.com with: www.mysite.com/sub/param1/param2 Param 1 is an integer number Param 2 is a url I wrote this rewrite rule in htaccess: RewriteCond %{REQUEST_URI} \/sub\/ RewriteRule sub\/([0-9]+)\/(.*)$ sub\/file.php?param1=$2&param2=$1 [L] Unfortunately param2 (the URL) starts with http:/www.someurl.com instead of http://www.someurl.com (note the single slash). Any idea what causes it? When I call the same file with same parameters in the format www.mysite.com/sub/file.php?param1=x&param2=http://www.someurl.com , param2 does appear OK so it must be something with the rewrite rule.

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  • Detect block size for quota in Linux

    - by Chen Levy
    The limit placed on disk quota in Linux is counted in blocks. However, I found no reliable way to determine the block size. Tutorials I found refer to block size as 512 bytes, and sometimes as 1024 bytes. I got confused reading a post on LinuxForum.org for what a block size really means. So I tried to find that meaning in the context of quota. I found a "Determine the block size on hard disk filesystem for disk quota" tip on NixCraft, that suggested the command: dumpe2fs /dev/sdXN | grep -i 'Block size' or blockdev --getbsz /dev/sdXN But on my system those commands returned 4096, and when I checked the real quota block size on the same system, I got a block size of 1024 bytes. Is there a scriptable way to determine the quota block size on a device, short of creating a known sized file, and checking it's quota usage?

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  • C# Gridview - Checking if a column already exists when adding a new column fails

    - by Nir
    I have a GridView with 10 columns. On a certain condition, I want to add a new column called "Expiration Date". The problem is that when the user presses "Search" again (Postback) the column is added again. I check before adding the column, to see if it already exists: BoundField dtExp = new BoundField {DataField = "DateTimeExpired", HeaderText = "Expiration Date", DataFormatString = "{0:d}"}; if (!grid.Columns.Contains(dtExp)){grid.Columns.Add(dtExp);} But the problem is that even if the column already exists, "Contains" returns false. What am I doing wrong? Thanks!

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  • mysql fulltext search as level2 index

    - by Nir
    lets say I have a table with product details. one of the fields is category (integer). I want to do fulltext search on product name in specific category. Unfortunately Mysql does not allow me to specify index that includes category and product name as fulltext. It looks like I can use fulltext only on product_name and theefore any fulltext search will search product names in all categories. Is there any way to solve this (allow fulltext search/index only on products in category)?

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  • bash: function + source + declare = boom

    - by Chen Levy
    Here is a problem: In my bash scripts I want to source several file with some checks, so I have: if [ -r foo ] ; then source foo else logger -t $0 -p crit "unable to source foo" exit 1 fi if [ -r bar ] ; then source bar else logger -t $0 -p crit "unable to source bar" exit 1 fi # ... etc ... Naively I tried to create a function that do: function save_source() { if [ -r $1 ] ; then source $1 else logger -t $0 -p crit "unable to source $1" exit 1 fi } safe_source foo safe_source bar # ... etc ... But there is a snag there. If one of the files foo, bar, etc. have a global such as -- declare GLOBAL_VAR=42 -- it will effectively become: function save_source() { # ... declare GLOBAL_VAR=42 # ... } thus a global variable becomes local. The question: An alias in bash seems too weak for this, so must I unroll the above function, and repeat myself, or is there a more elegant approach? ... and yes, I agree that Python, Perl, Ruby would make my file easier, but when working with legacy system, one doesn't always have the privilege of choosing the best tool.

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  • Private JQuery instance

    - by Nir Levy
    We are writing a SaaS like solution that requires our customers to SCRIPT SRC some javascript code we are building (think Google Analytics scenario). We would like to use JQuery. However, since our customers might already have conflicting JQuery versions or other conflicting frameworks (prototype.js for one) we cannot tell them to source jquery.js. We were thinking of coping the jquery source as to create a 'private' jquery instance and simple search/replace the JQuery and $ functions with myJQuery and $J Is there any reason for this not to work? has anyone tried something like this? What can we do about plugins?

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  • Does MATLAB perform tail call optimization?

    - by Shea Levy
    I've recently learned Haskell, and am trying to carry the pure functional style over to my other code when possible. An important aspect of this is treating all variables as immutable, i.e. constants. In order to do so, many computations that would be implemented using loops in an imperative style have to be performed using recursion, which typically incurs a memory penalty due to the allocation a new stack frame for each function call. In the special case of a tail call (where the return value of a called function is immediately returned to the callee's caller), however, this penalty can be bypassed by a process called tail call optimization (in one method, this can be done by essentially replacing a call with a jmp after setting up the stack properly). Does MATLAB perform TCO by default, or is there a way to tell it to?

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