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How to access parent Iframe from JavaScript
...d Oct 10 '10 at 16:13
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Identify if a string is a number
...you can discard the out parameter
var isNumeric = int.TryParse("123", out _);
The var s can be replaced by their respective types!
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What is the easiest way in C# to trim a newline off of a string?
I want to make sure that _content does not end with a NewLine character:
10 Answers
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How to fix HTTP 404 on Github Pages?
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In my case, I had folders whose names started with _ (like _css and _js), which GH Pages ignores as per Jekyll processing rules. If you don't use Jekyll, the workaround is to place a file named .nojekyll in the root directory.
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Can gcc output C code after preprocessing?
...cc installed, the command line is:
gcc -E -x c -P -C -traditional-cpp code_before.cpp > code_after.cpp
(Doesn't have to be 'cpp'.) There's an excellent description of this usage at http://www.cs.tut.fi/~jkorpela/html/cpre.html.
The "-traditional-cpp" preserves whitespace & tabs.
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Create unique constraint with null columns
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Create two partial indexes:
CREATE UNIQUE INDEX favo_3col_uni_idx ON favorites (user_id, menu_id, recipe_id)
WHERE menu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE menu_id IS NULL;
This way, there can only be one combination...
PHP how to get local IP of system
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From CLI
PHP < 5.3.0
$localIP = getHostByName(php_uname('n'));
PHP >= 5.3.0
$localIP = getHostByName(getHostName());
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
...n import it, though. You have to do conda install C:\...PACKAGE-0.0.0-py27_0.tar.bz2 as described in stackoverflow.com/a/20750388/125507
– endolith
Oct 16 '15 at 1:52
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Detect backspace in empty UITextField
...yTextField
- (void)deleteBackward {
[super deleteBackward];
if ([_myDelegate respondsToSelector:@selector(textFieldDidDelete)]){
[_myDelegate textFieldDidDelete];
}
}
@end
Now simply add MyTextFieldDelegate to your UIViewController and set your UITextFields myDelegate to sel...
How to install a specific JDK on Mac OS X?
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In a comment under @Thilo's answer, @mobibob asked how to set JAVA_HOME in your .bash_profile on a Mac. Answer:
export JAVA_HOME=`/usr/libexec/java_home`
This will dynamically assign to JAVA_HOME the location of the first JDK listed in the "General" tab of "Java Preferences" utility.
S...