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How to prevent buttons from submitting forms
...; return false;">Remove Last Item</button>
...that'll keep them from triggering a submit action when an exception occurs in the event handler. Then, fix your removeItem() function so that it doesn't trigger an exception:
function removeItem() {
var rows = $('form tr');
if ( rows.leng...
Does bit-shift depend on endianness?
... is operating on the value in the processor's register. Therefore, loading from memory to processor is the equivalent of converting to big endian, the shifting operation comes next and then the new value is stored back in memory, which is where the little endian byte order comes into effect again.
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What is tail recursion?
...ll, the running_total is updated.
Note: The original answer used examples from Python. These have been changed to JavaScript, since Python interpreters don't support tail call optimization. However, while tail call optimization is part of the ECMAScript 2015 spec, most JavaScript interpreters don't...
Installing Python 3 on RHEL
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Installing from RPM is generally better, because:
you can install and uninstall (properly) python3.
the installation time is way faster. If you work in a cloud environment with multiple VMs, compiling python3 on each VMs is not accept...
What permission do I need to access Internet from an Android application?
... without saying so in their manifests? That is, if Janusz ran the same app from the question in today's phones, it would not have failed the way it did when the question was asked?
– Rob Kennedy
Jan 19 '15 at 23:53
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Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
...ust stylistic points, they're entirely necessary if your API is to be safe from deadlocks or other edge-case behavior that WILL otherwise hang you from the nearest tree someday. :-)
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Get person's age in Ruby
I'd like to get a person's age from its birthday. now - birthday / 365 doesn't work, because some years have 366 days. I came up with the following code:
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How do I embed a single file from a GitHub gist with the new gist interface?
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Take the gist URL from the left-hand side and after the .js add a query string like ?file=myFile.blah, e.g.
<script src="https://gist.github.com/4505639.js?file=macroBuild.scala" type="text/javascript"></script>
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How do I call Objective-C code from Swift?
...a quick build with ⌘⇧R to help Xcode find some of the Objective-C code from a Swift context and vice versa.
If you add a .swift file to an older project and get the error dyld: Library not loaded: @rpath/libswift_stdlib_core.dylib, try completely restarting Xcode.
While it was originally possib...
What does “Could not find or load main class” mean?
...relative pathnames in the classpath, check that they resolve correctly ... from the current directory that is in effect when you run the java command.
Check that the class (mentioned in the error message) can be located on the effective classpath.
Note that the classpath syntax is different for Wind...