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How do I check if an object has a specific property in JavaScript?
...king for. If you want to know if an object physically contains a property (and it is not coming from somewhere up on the prototype chain) then object.hasOwnProperty is the way to go. All modern browsers support it. (It was missing in older versions of Safari - 2.0.1 and older - but those versions of...
How to save a Python interactive session?
...a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, little for loops and bits of logic) -- some history of the interactive session? If...
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...
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...
Quick easy way to migrate SQLite3 to MySQL? [closed]
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Everyone seems to starts off with a few greps and perl expressions and you sorta kinda get something that works for your particular dataset but you have no idea if it's imported the data correctly or not. I'm seriously surprised nobody's built a solid library that can co...
TypeScript function overloading
...ction 6.3 of the TypeScript language spec talks about function overloading and gives concrete examples on how to implement this. However if I try something like this:
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How do I use the nohup command without getting nohup.out?
I have a problem with the nohup command.
8 Answers
8
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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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Testing service in Angular returns module is not defined
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Note that angular.module and angular.mock.module are not the same. The window.module function is an alias for angular.mock.module. See this answer for more.
– Tim Schaub
Jan 5 '13 at 1:41
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How do you calculate the average of a set of circular data? [closed]
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Compute unit vectors from the angles and take the angle of their average.
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