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How to create a simple map using JavaScript/JQuery [duplicate]

... this.data[key] = null won't delete the property; it just sets its value to null. You should use delete this.data[key] instead. – Michael Scheper Apr 4 '14 at 0:49 ...
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Unsafe JavaScript attempt to access frame with URL

I am getting the below error when i try to set a hash value to the parent url from iframe which contains another domain url: ...
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How to check that an object is empty in PHP?

...doesn't actually check if an array is empty, empty($var) equivalent to (!isset($var) || !$var). You can replace your empty($arr)s with !$arr since array() == FALSE – Timothy Zorn Aug 20 '15 at 18:35 ...
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Coalesce function for PHP?

Many programming languages have a coalesce function (returns the first non-NULL value, example ). PHP, sadly in 2009, does not. ...
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String slugification in Python

I am in search of the best way to "slugify" string what "slug" is , and my current solution is based on this recipe 10 An...
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Getting full JS autocompletion under Sublime Text

..., and even following the advice given in this post , namely to explicitly set View > Syntax > JavaScript > JavaScript , I only see suggestions based on what I have previously typed. I even installed the SublimeCodeIntel plug-in , to no avail. ...
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How to “crop” a rectangular image into a square with CSS?

... Place your image in a div. Give your div explicit square dimensions. Set the CSS overflow property on the div to hidden (overflow:hidden). Put your imagine inside the div. Profit. For example: <div style="width:200px;height:200px;overflow:hidden"> <img src="foo.png" /> </...
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Use Font Awesome Icon in Placeholder

...shows up just like that, text. If you are using Ember or not, you need to set the CSS of the input's placeholder to have a font-family of FontAwesome. This is SCSS (using Bourbon for the placeholder styling): input { width:96%; margin:5px 2%; padding:0 8px; border:1px s...
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How do I “decompile” Java class files? [closed]

What program can I use to decompile a class file? Will I actually get Java code, or is it just JVM assembly code? 19 Answer...
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How do I generate a stream from a string?

I need to write a unit test for a method that takes a stream which comes from a text file. I would like to do do something like this: ...