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Using the star sign in grep
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The asterisk is just a repetition operator, but you need to tell it what you repeat. /*abc*/ matches a string containing ab and zero or more c's (because the second * is on the c; the first is meaningless because there's nothing for it to repeat). If yo...
Best way to create an empty object in JSON with PHP?
... an empty object, some might therefor say that your code is valid and that it's the method to use.
PHP: Objects - Manual
If a value of any other type is converted to an object, a new instance of the stdClass built-in class is created. If the value was NULL, the new instance will be empty.
.. but,...
Python unit test with base and sub class
I currently have a few unit tests which share a common set of tests. Here's an example:
15 Answers
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Confused by python file mode “w+”
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Let's say you're opening the file with a with statement like you should be. Then you'd do something like this to read from your file:
with open('somefile.txt', 'w+') as f:
# Note that f has now been truncated to 0 bytes, so you'll only
# be able to re...
Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
...to be unwound etc.
On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation.
BTW: The correct way to do this is to use TryGetValue
obj item;
if(!dict.TryGetValue(name, out item))
return null;
return item;
This accesses the dictionary only ...
Is it possible to set async:false to $.getJSON call
Is it possible to set async: false when calling $.getJSON() so that the call blocks rather than being asynchronous?
7 A...
Type or namespace name does not exist [closed]
I have a WCF Data Service project built with Visual Studio 2010, which was working fine. All of a sudden, it didn't compile anymore. It was giving me messages like:
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Decimal number regular expression, where digit after decimal is optional
...eed a regular expression that validates a number, but doesn't require a digit after the decimal.
ie.
15 Answers
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java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
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It sounds like you have a memory leak. The problem isn't handling many images, it's that your images aren't getting deallocated when your activity is destroyed.
It's difficult to say why this is without looking at your code....
How to create permanent PowerShell Aliases
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UPDATED - Jan 2017
It's possible to store in a profile.ps1 file any powershell code to be executed each time powershell starts. There are at least 6 different paths where to store the code depending on which user have to execute it. We can cons...