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How to validate an email address in PHP
... source.
If you want to learn more about email addresses I suggest you to start reading the specs, but I have to warn you it is not an easy read by any stretch:
rfc5322
rfc5321
rfc3696
rfc6531 (allows unicode characters, although many clients / servers don't accept it)
Note that filter_var() is...
Most efficient way to increment a Map value in Java
...ort java.util.Map;
...
class MutableInt {
int value = 1; // note that we start at 1 since we're counting
public void increment () { ++value; }
public int get () { return value; }
}
...
Map<String, MutableInt> freq = new HashMap<String, MutableInt>();
...
MutableInt coun...
Error java.lang.OutOfMemoryError: GC overhead limit exceeded
... Replying to a very old comment here, but... @Bart The -XX: at the start of several command line options is a flag of sorts indicating that this option is highly VM-specific and unstable (subject to change without notice in future versions). In any case, the -XX:-UseGCOverheadLimit flag tel...
Android, How can I Convert String to Date?
I store current time in database each time application starts by user.
6 Answers
6
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How to install Xcode Command Line Tools
...ilable from the Software Update server". In late February 2014 the command started only displaying help. The solution is to download directly, see "Separate Download" below.
Xcode 5.0.1 and OSX 10.9
With Xcode 5.0.1 and Mavericks 10.9 the command line tool is no longer available through Xcode. In...
Should we use Nexus or Artifactory for a Maven Repo?
...locked on Maven and m2eclipse. They ignore anything else and only recently started to work on their own proprietary Hudson integration (see their Maven 3 webinar).
EDIT: This is not true anymore as of 2017 Nexus gives a much larger support for other build tools End of Edit
Artifactory provides an ...
What is the advantage of using abstract classes instead of traits?
... problem.
If you still do not know, after considering the above, then start by
making it as a trait. You can always change it later, and in general
using a trait keeps more options open.
As @Mushtaq Ahmed mentioned, a trait cannot have any parameters passed to the primary constructor of a...
Returning IEnumerable vs. IQueryable
...able has a property called Expression which stores a tree expression which starts being created when we used the result in our example (which is called deferred execution), and at the end this expression will be converted to an SQL query to run on the database engine.
...
Mac OS X - EnvironmentError: mysql_config not found
...opt/mysql-client/bin:$PATH"' >> ~/.bash_profile
Close terminal and start new terminal and proceed with pip install mysqlclient
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Android: What is better - multiple activities or switching views manually?
...mixture of both, for example,
1. There is a main menu when the application starts
2. You click on search, takes you to search activity
3. Then there's a filter button, which just switches view and shows you filter options
4. There are two buttons at the end of the filter view, You hit "Search" or "C...