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Regex empty string or email
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This regex pattern will match an empty string:
^$
And this will match (crudely) an email or an empty string:
(^$|^.*@.*\..*$)
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Simplest way to profile a PHP script
...latest release of APD is dated 2004, the extension is no longer maintained and has various compability issues (see comments).
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How to calculate md5 hash of a file using javascript
...user has to have selected it, either with an <input> element or drag-and-drop. As of Jan 2013, here's how the major browsers stack up:
FF 3.6 supports FileReader, FF4 supports even more file based functionality
Chrome has supported the FileAPI since version 7.0.517.41
Internet Explorer 10 ha...
C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
...unds it to the nearest 1000 so the precision is only to the "second" level and not to the milliseconds level.
16 Answers
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Html.ActionLink as a button or an image, not a link
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Late response but you could just keep it simple and apply a CSS class to the htmlAttributes object.
<%= Html.ActionLink("Button Name", "Index", null, new { @class="classname" }) %>
and then create a class in your stylesheet
a.classname
{
background: url(../Im...
Is there a perfect algorithm for chess? [closed]
...s huge. Even a 2 rooks + king has something like 22 possible next moves. And if it takes 6 moves to mate, you're looking at 12,855,002,631,049,216 moves.
Do the math on opening moves. While there's only about 20 opening moves, there are something like 30 or so second moves, so by the third move ...
“Use of undeclared type” in Swift, even though type is internal, and exists in same module
... 'undeclared type' was being used in so many other places with no problem, and the error seemed vague. So solution there was of course to add the file containing the 'undeclared type' to the test target.
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Debugging doesn't start [closed]
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I had the same problem and all the tricks didnt do it until I unchecked the "Enable the Visual Studio hosting process" under the debug tab in the project properties
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How to fix java.net.SocketException: Broken pipe?
...e commons http client to call url using post method to post the parameters and it is throwing the below error rarely.
10 A...
Difference between “change” and “input” event for an `input` element
Can someone tell me what the difference between the change and input events is?
4 Answers
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