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How to use java.String.format in Scala?
...ethod of a string. But if I place %1, %2, etc. in the string, java.util.UnknownFormatConversionException is thrown pointing to a confusing Java source code piece:
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Concurrent vs serial queues in GCD
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First, it's important to know the difference between threads and queues and what GCD really does. When we use dispatch queues (through GCD), we're really queueing, not threading. The Dispatch framework was designed specifically to get us away from thr...
#define macro for debug printing in C?
...() in the example — to handle things like 'stderr'. It requires you to know how to write varargs functions, but that isn't hard:
#include <stdarg.h>
#include <stdio.h>
void dbg_printf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);...
Does JavaScript have “Short-circuit” evaluation?
I would like to know if JavaScript has "short-circuit" evaluation like && Operator in C#. If not, I would like to know if there is a workaround that makes sense to adopt.
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Using vagrant to run virtual machines with desktop environment
...o |vb|
vb.gui = true
end
Boot the VM and observe the new display window. Now you just need to install and start xfce4. Use vagrant ssh and:
sudo apt-get install xfce4
sudo startxfce4&
If this is the first time you're running this Ubuntu environment, you'll need to run the following command ...
Eclipse error: 'Failed to create the Java Virtual Machine'
... any other text-editor application, Find the line -Xmx256m (or -Xmx1024m). Now change the default value 256m (or 1024m) to 512m. You also need to give the exact java installed version (1.6 or 1.7 or other).
Like This:
-Xmx512m
-Dosgi.requiredJavaVersion=1.6
OR
-Xmx512m
-Dosgi.requiredJavaVers...
How to convert NSDate into unix timestamp iphone sdk?
...e number of seconds from 1970 till the point in time you want to specify ("now" in this case). If you change the time on your iPad, you effectively change "now" to some other time and hence the difference in the time stamps.
– marsbear
Nov 29 '16 at 17:50
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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...her be converted to a delegate type or an expression tree - but it has to know which delegate type. Just knowing the signature isn't enough. For instance, suppose I have:
public delegate void Action1();
public delegate void Action2();
...
Delegate x = () => Console.WriteLine("hi");
What woul...
T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
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@AdamRobinson 1.5 years are passed do you know some more efficient way to update only one column
– user1432124
Jun 16 '12 at 15:19
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how to implement a pop up dialog box in iOS
...isplay a pop up or alert box conveying a message to the user. Does anyone know where I can find more information about this?
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