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How do I make a textbox that only accepts numbers?
...
Here is a simple standalone Winforms custom control, derived from the standard TextBox, that allows only System.Int32 input (it could be easily adapted for other types such as System.Int64, etc.). It supports copy/paste operations and negative numbers:
public c...
How to limit depth for recursive file list?
...get shown should be different, -printf can show any detail about a file in custom format;
To show the symbolic permissions and the owner name of the file, use -printf with %M and %u in the format.
I noticed later you want the full ownership information, which includes
the group. Use %g in the format...
Redis is single-threaded, then how does it do concurrent I/O?
...hich is different.
For instance a bartender is able to look after several customers while he can only prepare one beverage at a time. So he can provide concurrency without parallelism.
This question has been debated here:
What is the difference between concurrency and parallelism?
See also this p...
How to print a date in a regular format?
...u may want to print them in a specific format. In that case, you can get a custom string representation using the strftime() method.
strftime() expects a string pattern explaining how you want to format your date.
E.G :
print today.strftime('We are the %d, %b %Y')
>>> 'We are the 22, Nov 20...
How can I save application settings in a Windows Forms application?
..., app-scope settings are read-only: save is ineffective for them. Use that custom PortableSettingsProvider to save user-scope settings to the app.config located where the exe is instead of the one in the user's AppData folder. No, not generally good, but I use it during development to use the same s...
Folder structure for a Node.js project
...
Concerning the folders you mentioned:
/libs is usually used for custom classes/functions/modules
/vendor or /support contains 3rd party libraries (added as git
sub-module when using git as source control)
/spec contains specifications for BDD tests.
/tests contains the unit-tests for an a...
How to get the error message from the error code returned by GetLastError()?
... if (cchMsg > 0)
{
// Assign buffer to smart pointer with custom deleter so that memory gets released
// in case String's c'tor throws an exception.
auto deleter = [](void* p) { ::LocalFree(p); };
std::unique_ptr<TCHAR, decltype(deleter)> ptrBuffer(psz,...
How to easily initialize a list of Tuples?
...r the covers, that means you can
simply extend from List<T>, add a custom Add method to initialize your
T, and you are done!
public class TupleList<T1, T2> : List<Tuple<T1, T2>>
{
public void Add( T1 item, T2 item2 )
{
Add( new Tuple<T1, T2>( item,...
Android: I am unable to have ViewPager WRAP_CONTENT
... I CAN'T FRIKIN BELIEVE IT! I spent 2 days glueing together my custom viewpager and got stuck on a problem, when my initial view would not show up and I just couldnt figure out why! // super has to be called in the beginning so the child views can be initialized. <----- THAT was the r...
Best Practice for Forcing Garbage Collection in C#
...make sure objects are cleaned up when you no longer need them. If you have custom objects, look at using the "using statement" and the IDisposable interface.
This link has some good practical advice with regards to freeing up memory / garbage collection etc:
http://msdn.microsoft.com/en-us/library...