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List comprehension rebinds names even after scope of comprehension. Is this right?
...list
comprehensions blindingly fast, and
while it was not a common pitfall for
beginners, it definitely stung people
occasionally. For generator
expressions we could not do this.
Generator expressions are implemented
using generators, whose execution
requires a separate execution fra...
Why would $_FILES be empty when uploading files to PHP?
I have WampServer 2 installed on my Windows 7 computer. I'm using Apache 2.2.11 and PHP 5.2.11. When I attempt to upload any file from a form, it seems to upload, but in PHP, the $_FILES array is empty. There is no file in the c:\wamp\tmp folder. I have configured php.ini to allow file uploads...
How to calculate time elapsed in bash script?
...on doesn't depend on date +%s (which is a GNU extension), it's portable to all systems supported by Bash.
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How are strings passed in .NET?
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A reference is passed; however, it's not technically passed by reference. This is a subtle, but very important distinction. Consider the following code:
void DoSomething(string strLocal)
{
strLocal = "local";
}
void Main()
{
string strMain = "main";
DoSomething...
How do you get the list of targets in a makefile?
...ed rake a bit (a Ruby make program), and it has an option to get a list of all the available targets, eg
20 Answers
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How do I find a list of Homebrew's installable packages?
Recently I installed Brew . How can I retrieve a list of available brew packages to install?
3 Answers
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static constructors in C++? I need to initialize private static objects
... to have a class with a private static data member (a vector that contains all the characters a-z). In java or C#, I can just make a "static constructor" that will run before I make any instances of the class, and sets up the static data members of the class. It only gets run once (as the variables ...
Undoing a git bisect mistake
I'm doing a non-automated git bisect via command line. All is going well until I accidentally hit return on the wrong line in my command history, and rather than running the test, I run 'git bisect good' (or bad). Oops - I don't yet know if this commit should be marked good or bad, yet that's what I...
Netbeans: how to change @author
...ou might also want to do a Find and Replace(Ctrl + Shift + H) for changing all the already place @ author tag in the project. As the change above doesn't change the already placed @ author.
– T04435
Oct 12 '15 at 6:25
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GridView VS GridLayout in Android Apps
... visible on screen. Whereas if you use a GridLayout you would have to load all the images that will be displayed at anytime causing an outofmemory error in most of devices.
– BigBen3216
Jun 6 '13 at 23:43
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