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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
...Available overloads are 1, 2 or 3 object parameters, 4 object parameters + __arglist and a params object array version.
– Wormbo
May 30 '12 at 17:20
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Is there a Java reflection utility to do a deep comparison of two objects?
...preserving the equals contract"
Besides what good does a boolean method really do you anyway? It'd be nice to actually encapsulate all the differences between the original and the clone, don't you think? Also, I'll assume here that you don't want to be bothered with writing/maintaining comparison c...
Automatically start a Windows Service on install
I have a Windows Service which I install using the InstallUtil.exe. Even though I have set the Startup Method to Automatic, the service does not start when installed, I have to manually open the services and click start. Is there a way to start it either via the command line, or through the code of ...
How can I specify a local gem in my Gemfile?
...nly by using the following configuration option:
$ bundle config local.GEM_NAME /path/to/local/git/repository
This is extremely helpful if you're developing two gems or a gem and a rails app side-by-side.
Note though, that this only works when you're already using git for your dependency, for ex...
unix - head AND tail of file
... 10; my @buf = (); while (<>) { print if $. <= $size; push(@buf, $_); if ( @buf > $size ) { shift(@buf); } } print "------\n"; print @buf;'
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Haskell: Converting Int to String
...swered Oct 25 '17 at 5:15
prasad_prasad_
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iPhone : How to detect the end of slider drag?
...*)slider forEvent:(UIEvent*)event {
UITouch *touchEvent = [[event allTouches] anyObject];
switch (touchEvent.phase) {
case UITouchPhaseBegan:
// handle drag began
break;
case UITouchPhaseMoved:
// handle drag moved
bre...
Calling startActivity() from outside of an Activity context
...our adapter, or
get it from your view.
Or as a last resort,
add - FLAG_ACTIVITY_NEW_TASK flag to your intent:
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myIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Edit - i would avoid setting flags as it will interfere with normal flow of event and history stack.
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What is the difference between self-types and trait subclasses?
...is extended, then you're required to mix-in an A.
When a concrete class finally extends/mixes-in these traits, some class/trait must implement A.
Consider the following examples:
scala> trait User { def name: String }
defined trait User
scala> trait Tweeter {
| user: User =>
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How can I test if a letter in a string is uppercase or lowercase using JavaScript?
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assert(!isLowerCase("Ü"))
assert(!isLowerCase("4"))
assert(!isLowerCase("_"))
To check one letter just call it using isLowerCase(str[charIndex])
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