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PatternSyntaxException: Illegal Repetition when using regex in Java
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The { and } are special in Java's regex dialect (and most other dialects for that matter): they are the opening and closing tokens for the repetition quantifier {n,m} where n and m are integers. Hence the error message: "Illegal repetition".
You should escape them: "\\{\"user_id\" : [0-9]*\\}".
A...
What techniques can be used to define a class in JavaScript, and what are their trade-offs?
I prefer to use OOP in large scale projects like the one I'm working on right now. I need to create several classes in JavaScript but, if I'm not mistaken, there are at least a couple of ways to go about doing that. What would be the syntax and why would it be done in that way?
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What good technology podcasts are out there?
Yes, Podcasts, those nice little Audiobooks I can listen to on the way to work. With the current amount of Podcasts, it's like searching a needle in a haystack, except that the haystack happens to be the Internet and is filled with too many of these "Hot new Gadgets" stuff :(
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How to create multidimensional array
...2[1] == 'input4';
http://jsfiddle.net/z4Un3/
And if you're wanting to store DOM elements:
var inputs = [
[
document.createElement('input'),
document.createElement('input')
],
[
document.createElement('input'),
document.createElement('input')
]
];
i...
How to get the python.exe location programmatically? [duplicate]
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This works in Linux & Windows:
Python 3.x
>>> import sys
>>> print(sys.executable)
C:\path\to\python.exe
Python 2.x
>>> import sys
>>> print sys.executable
/usr/bin/python
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How to merge a specific commit in Git
I have forked a branch from a repository in GitHub and committed something specific to me. Now I found the original repository had a good feature which was at HEAD .
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Object initialization syntax
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the answer from CMS is definitely correct. Here is just one addition that may be also helpful. In F#, you often want to write the type just using immutable properties. When using the "object initializer" syntax, the properties have to be mutable. An alternativ...
On showing dialog i get “Can not perform this action after onSaveInstanceState”
Some users are reporting, if they use the quick action in the notification bar, they are getting a force close.
16 Answers
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How to locate the git config file in Mac [duplicate]
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The global Git configuration file is stored at $HOME/.gitconfig on all platforms.
However, you can simply open a terminal and execute git config, which will write the appropriate changes to this file. You shouldn't need to manually tweak .gitconfig, unless you p...
What's the difference between IComparable & IEquatable interfaces?
both the interfaces seem to compare objects for equality, so what's the major differences between them?
5 Answers
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