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month name to month number and vice versa in python
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Fixed it. I should have read the documentation more carefully, I missed that calendar.month_abbr was an array instead of a dictionary.
– David Z
Aug 5 '10 at 19:14
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How does the Java 'for each' loop work?
... I've found just calling a while-loop like while (someList.hasMoreElements()) { //do something }} - gets me close to the coding grace I'd hoped to find when I searched for this question.
– James T Snell
Nov 16 '12 at 18:10
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Why can't I use switch statement on a String?
...ing String constants in case declarations is expanded at compile-time into more complex code following a pattern. The resulting code uses JVM instructions that have always existed.
A switch with String cases is translated into two switches during compilation. The first maps each string to a unique ...
Integer.toString(int i) vs String.valueOf(int i)
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and so on
In my opinion this is not some historical thing, but it is more useful for a developer to use the method valueOf from the String class than from the proper type, as it leads to fewer changes for us to make.
Sample 1:
public String doStuff(int num) {
// Do something with num...
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How to load images dynamically (or lazily) when users scrolls them into view
...about the same way: afarkas.github.io/lazysizes except I believe it's much more robust and uses more of what's already there (no need for placeholder, for instance, but you can have it if you want).
– cregox
May 28 '15 at 17:19
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Getting the last element of a split string array
...fier that means the same as the quantifier {1,}, i.e. [, ]+ matches one or more of the characters in the set (comma and space). It's useful when you want all the words from the string, but when you only want the last word it doesn't make any functional difference, it only reduces the overhead as the...
What are the differences between a HashMap and a Hashtable in Java?
...u can use Collections.synchronizedMap() or use ConcurrentHashMap which is more efficient that hashtable.
– Maneesh Kumar
Mar 30 '18 at 3:45
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Using node.js as a simple web server
...your web browser and enables CORS requests:
$ http-server -o --cors
For more options, check out the documentation for http-server on GitHub, or run:
$ http-server --help
Lots of other nice features and brain-dead-simple deployment to NodeJitsu.
Feature Forks
Of course, you can easily top up ...
Java - JPA - @Version annotation
... Will this prevent creating an entity being (tried to) created more than once? I mean suppose a JMS topic message triggers creation of an entity and there are multiple instances of an application listens to the message. I just want to avoid the unique constraint violation error..
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Proper use of the IDisposable interface
...should not touch any managed resources (because they might not be there anymore), while still freeing unmanaged resources.
The standard pattern to do this is to have Finalize() and Dispose() both call a third(!) method; where you pass a Boolean saying if you're calling it from Dispose() (as opposed...