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What is Prefix.pch file in Xcode?
...ix Header so they get precompiled. But the idea behind a prefix header is different from precompiling.
A prefix header is implicitly included at the start of every source file. It’s like each source file adds
#import "Prefix.pch"
at the top of the file, before anything else.
Removing it.
You can ...
IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
...the JDK Home path field is pointing to a valid JDK folder (add a new entry if needed e.g. jdk1.8.0_161).
Within Project Settings > Modules:
Make sure that the Module SDK is set to the same entry you picked in the Platform Settings > SDKs
Save & Build again.
...
.rar, .zip files MIME Type
...zip
I would do a check on the file name too. Here is how you could check if the file is a RAR or ZIP file. I tested it by creating a quick command line application.
<?php
if (isRarOrZip($argv[1])) {
echo 'It is probably a RAR or ZIP file.';
} else {
echo 'It is probably not a RAR or Z...
Convert Elixir string to integer or float
...
Note that this will return a tuple (if successful) and not the integer directly. If you want to do that, see @Szymon Jeż answer with String.to_integer/1
– user4275029
Sep 26 '16 at 12:27
...
How to scroll to specific item using jQuery?
...have a big table with vertical scroll bar.
I would like to scroll to a specific line in this table using jQuery/Javascript.
...
switch case statement error: case expressions must be constant expression
...le.
The solution for this is simple: Convert the switch statement into an if-else statement.
public void onClick(View src)
{
int id = src.getId();
if (id == R.id.playbtn){
checkwificonnection();
} else if (id == R.id.stopbtn){
Log.d(TAG, "onClick: stopping srvice");
...
force browsers to get latest js and css files in asp.net application
... context.Cache.Add(filename, version, null,
DateTime.Now.AddMinutes(5), TimeSpan.Zero,
CacheItemPriority.Normal, null);
return version;
}
else
{
return context.Cache[filename] as string;
}
}
}
And then ...
str performance in python
... 3 RETURN_VALUE
% with a run-time expression is not (significantly) faster than str:
>>> Timer('str(x)', 'x=100').timeit()
0.25641703605651855
>>> Timer('"%s" % x', 'x=100').timeit()
0.2169809341430664
Do note that str is still slightly slower, as @DietrichEpp ...
Error-Handling in Swift-Language
...ry? summonDefaultDragon() else { ... }
Finally, you can decide that you know that error will not actually occur (e.g. because you have already checked are prerequisites) and use try! keyword:
let dragon = try! summonDefaultDragon()
If the function actually throws an error, then you'll get a run...
What are Vertex Array Objects?
...; //vertf buf is a floatbuffer of vertices
At this point OpenGL Sees:
Now we can use glVertexAttribPointer to tell OpenGL what the data in the buffer represents:
glBindBuffer(GL_ARRAY_BUFFER, 0); //bind VBO at 0
glVertexAttribPointer(0, 3, GL_FLOAT, false, 0, 0); //each vertex has 3 components...