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Why use static_cast(x) instead of (int)x?
...or that makes it possible. The only time it's a bit risky is when you cast down to an inherited class; you must make sure that the object is actually the descendant that you claim it is, by means external to the language (like a flag in the object). A dynamic_cast<>() is safe as long as the re...
What is the best CSS Framework and are they worth the effort?
...de a base library/framework and then call functions and objects from it to do higher-level work. All a CSS framework can give you is declarative rules: some default browser-rule-reset stuff, some class styles to be forced to author your page to, and layout rules using 'float' and 'clear'. You can wr...
How to change MySQL data directory?
...
Stop MySQL using the following command:
sudo /etc/init.d/mysql stop
Copy the existing data directory (default located in /var/lib/mysql) using the following command:
sudo cp -R -p /var/lib/mysql /newpath
edit the MySQL configuration file with the following command...
Completion handler for UINavigationController “pushViewController:animated”?
...igationController?.pushViewController(vc, animated: true) {
// Animation done
}
Objective-C
Header:
#import <UIKit/UIKit.h>
@interface UINavigationController (CompletionHandler)
- (void)completionhandler_pushViewController:(UIViewController *)viewController
...
Determining complexity for recursive functions (Big O notation)
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int recursiveFun5(int n)
{
for (i = 0; i < n; i += 2) {
// do something
}
if (n <= 0)
return 1;
else
return 1 + recursiveFun5(n-5);
}
And here the for loop takes n/2 since we're increasing by 2, and the recursion takes n-5 and since the for loop is ca...
Refresh a page using PHP
How can I refresh a page using PHP periodically? If I can not do it by PHP, what is the best recommended scenario?
13 Answe...
Making a LinearLayout act like an Button
...st now. You'll have to set the LinearLayout to clickable. You can either do this in the XML with
android:clickable="true"
Or in code with
yourLinearLayout.setClickable(true);
Cheers!
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Can't install Ruby under Lion with RVM – GCC issues
...f GCC, which is no longer included with XCode 4.2. Install it yourself (or downgrade to XCode 4.1 temporarily), then do CC=/usr/local/bin/gcc-4.2 rvm install 1.9.3 --enable-shared (substituting the path to your non-LLVM gcc).
Edit: https://github.com/kennethreitz/osx-gcc-installer/downloads may hel...
Using forked package import in Go
....com/you/repo . You want to use your fork instead of the main repo, so you do a
10 Answers
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Angular ng-if=“” with multiple arguments
I am trying to get started on angular development. And after reviewing the documentation some questions persist. How do i best write a ng-if with multiple arguments corresponding to
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