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LINQ .Any VS .Exists - What's the difference?
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I later made a post in another thread where I listed all the Linq "equivalents" of the .NET 2 List<> instance methods.
– Jeppe Stig Nielsen
Dec 1 '15 at 8:44
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Should I use px or rem value units in my CSS? [closed]
...size of a pixel on a 96 dpi display. On a display that has a dpi substantially different than 96dpi (like Retina displays), the user agent rescales the px unit so that its size matches that of a reference pixel. In other words, this rescaling is exactly why 1 CSS pixel equals 2 physical Retina dis...
How to truncate a foreign key constrained table?
...ata integrity.
Option 1:
Remove constraints
Perform TRUNCATE
Delete manually the rows that now have references to nowhere
Create constraints
Option 2: suggested by user447951 in their answer
SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE table $table_name;
SET FOREIGN_KEY_CHECKS = 1;
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Clicking the back button twice to exit an activity
...ode uses System.currentTimeMillis(); to store the time onBackPressed() is called;
private static final int TIME_INTERVAL = 2000; // # milliseconds, desired time passed between two back presses.
private long mBackPressed;
@Override
public void onBackPressed()
{
if (mBackPressed + TIME_INTERVAL ...
How can I view array structure in JavaScript with alert()?
...t language spec, so you shouldn't rely on the JSON object being present in all browsers, but for debugging purposes it's incredibly useful.
I tend to use the jQuery-json plugin as follows:
alert( $.toJSON(myArray) );
This prints the array in a format like
[5, 6, 7, 11]
However, for debugging ...
Remove blank lines with grep
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Try the following:
grep -v -e '^$' foo.txt
The -e option allows regex patterns for matching.
The single quotes around ^$ makes it work for Cshell. Other shells will be happy with either single or double quotes.
UPDATE: This works for me for a file with blank lines or "all white ...
Converting Storyboard from iPhone to iPad
...d advice, thanks. While you're at it, you may also probably want to change all the width="320" to width="768", height="480" to height="1024", etc... directly from here. As it's much simpler than doing it element by element in IB.
– Ben G
Feb 6 '12 at 22:39
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jQuery: Get selected element tag name
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You can call .prop("tagName"). Examples:
jQuery("<a>").prop("tagName"); //==> "A"
jQuery("<h1>").prop("tagName"); //==> "H1"
jQuery("<coolTagName999>").prop("tagName"); //==> "COOLTAGNAME999"
If writing ...
HttpServletRequest to complete URL
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You need to conditionally check if the query string is empty.
– Adam Gent
Sep 15 '10 at 20:43
8
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Is it possible to perform a 'grep search' in all the branches of a Git project?
Is it possible to run git grep inside all the branches of a Git control sourced project? Or is there another command to run?
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