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Remove all whitespaces from NSString
...ng stringByReplacingOccurrencesOfString:@" " withString:@""]
2) If you really need to remove a set of characters (namely not only the space character, but any whitespace character like space, tab, unbreakable space, etc), you could split your string using the whitespaceCharacterSet then joining th...
Returning IEnumerable vs. IQueryable
...ecution.
The difference is that IQueryable<T> is the interface that allows LINQ-to-SQL (LINQ.-to-anything really) to work. So if you further refine your query on an IQueryable<T>, that query will be executed in the database, if possible.
For the IEnumerable<T> case, it will be L...
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...to mention, has tenuous support for C extensions. It has support, but typically at slower-than-Python speeds and it's iffy at best. Hence a lot of modules simply require CPython. PyPy doesn't support numpy PyPy now supports numpy. Some extensions are still not supported (Pandas, SciPy, etc.), take a...
Log all queries in mysql
... following in your my.cnf file:
log = log_file_name
Either one will log all queries to log_file_name.
You can also log only slow queries using the --log-slow-queries option instead of --log. By default, queries that take 10 seconds or longer are considered slow, you can change this by setting l...
How to see all TODO tasks in Android Studio?
How could I open a view in Android Studio where all tasks that I've created using // TODO comments would be displayed?
2 ...
Getting the IP address of the current machine using Java
... has the following effect: it sets the destination for Send/Recv, discards all packets from other addresses, and - which is what we use - transfers the socket into "connected" state, settings its appropriate fields. This includes checking the existence of the route to the destination according to th...
Best way to add page specific JavaScript in a Rails 3 app?
...equire jquery
//= require jquery_ujs
//= require_tree ./global // requires all js files in global folder
in a new admin.js manifest file
//= require_tree ./admin // requires all js files in admin folder
Make sure this new js manifest is loaded by editing config/production.rb
config.assets.prec...
How to reset Android Studio
...nt to reset Android Studio 0.2.13 to the default state. That means reset all settings, remove all projects, all gradle files so that it would act like a fresh installation. What steps do I have to follow to achieve this?
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Java 8: How do I work with exception throwing methods in streams?
...
You need to wrap your method call into another one, where you do not throw checked exceptions. You can still throw anything that is a subclass of RuntimeException.
A normal wrapping idiom is something like:
private void safeFoo(final A a) {
try {
...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
I am building a small chat application for friends, but unsure about how to get information in a timely manner that is not as manual or as rudimentary as forcing a page refresh.
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