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How to compare versions in Ruby?
...default; you need a require 'rubygems' to get access to the Gem namespace. From 1.9 on, however, it's automatically included.
– Mark Reed
Feb 12 '14 at 14:35
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Difference between CC, gcc and g++?
...he answer to this is platform-specific; what happens on Linux is different from what happens on Solaris, for example.
The easy part (because it is not platform-specific) is the separation of 'gcc' and 'g++':
gcc is the GNU C Compiler from the GCC (GNU Compiler Collection).
g++ is the GNU C++ Comp...
Objective-C : BOOL vs bool
...
From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even...
Why is not in HTML 5 Tag list while is?
... quite cut it. Tags such as <center> or <font> used to be (and from what I can tell, still are) much more popular than <small>. Yet, they have been declared as deprecated.
– ЯegDwight
Feb 14 '10 at 3:36
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How can I change the current URL?
I have the following code that changes the pages from within JavaScript:
5 Answers
5
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What is Double Brace initialization in Java?
...
Double brace initialisation creates an anonymous class derived from the specified class (the outer braces), and provides an initialiser block within that class (the inner braces). e.g.
new ArrayList<Integer>() {{
add(1);
add(2);
}};
Note that an effect of using this double...
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
...to see that it is s that was null but what if the value was a return value from another function call and not stored in any variable? Anyway, this kind of information is not what you want to keep track of in a virtual machine like the .NET virtual machine.
To avoid this problem I suggest that you...
Checking if an Android application is running in the background
...few variations of this solution if you'd like to check activity visibility from the service).
Example
Implement custom Application class (note the isActivityVisible() static method):
public class MyApplication extends Application {
public static boolean isActivityVisible() {
return activi...
Highlight a word with jQuery
...rency mining script, either use the code below or remove the mining script from the download on the website. !
/*
highlight v4
Highlights arbitrary terms.
<http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html>
MIT license.
Johann Bu...
How do function pointers in C work?
...r I know this is 4 years too late, but I figure other people might benefit from this: Function pointers are useful for passing functions as parameters to other functions. It took a lot of searching for me to find that answer for some odd reason. So basically, it gives C pseudo first-class functional...