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How to get the response of XMLHttpRequest?
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var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
alert(xhr.responseText);
}
}
xhr.open('GET', 'http://example.com', true);
xhr.send(null);
For better crossbrowser compatibility, not only with IE6/7, but also to cove...
Delete duplicate records in SQL Server?
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If you don't have a primary key, you can use ORDER BY (SELECT NULL) stackoverflow.com/a/4812038
– Arithmomaniac
Jul 1 '16 at 16:57
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Should I use 'border: none' or 'border: 0'?
...t Webpack→LESS→PostCSS→PurgeCSS is a good 2020 stack.
That all said, if you're hand-writing all your production CSS, I maintain —despite the grumbling in the comments— it does not hurt to be bandwidth conscious. Using border:0 will save an infinitesimal amount of bandwidth on its own, but ...
Calling a function every 60 seconds
Using setTimeout() it is possible to launch a function at a specified time:
13 Answers
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What is “android:allowBackup”?
... 21) , they have a new lint warning that tells me the next thing on the manifest file (in the application tag):
4 Answers
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How do you get the logical xor of two variables in Python?
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If you're already normalizing the inputs to booleans, then != is xor.
bool(a) != bool(b)
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Format bytes to kilobytes, megabytes, gigabytes
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If you used $bytes /= (1 << (10 * $pow)) or the like, I could like it better. :-P
– Chris Jester-Young
Mar 24 '10 at 18:46
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Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error
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You can get this type of error if your class' .m file is not listed under the "Compile Sources" step of the "Build Phases" tab of your target. Normally Xcode does this for you, but sometimes it loses the plot and you need to add the .m file manually.
To d...
How to get Activity's content view?
What method should I call to know if an Activity has its contentView (once the method setContentView() has been called)?
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How to drop columns using Rails migration
...:table_name, :column_name, :type, :options within the change method, since if you specify the type reverting the migration is possible. From the documentation: The typeand options parameters will be ignored if present. It can be helpful to provide these in a migration's change method so it can be re...