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How do I use the lines of a file as arguments of a command?
...(amongst others), a shortcut for $(cat afile) is $(< afile), so you'd write:
mycommand "$(< file.txt)"
Documented in the bash man page in the 'Command Substitution' section.
Alterately, have your command read from stdin, so: mycommand < file.txt
...
What's Up with Logging in Java? [closed]
...r of api apperance (as far as I know):
Log4j because most everybody uses it (in my experience)
Commons Logging because open source projects use it (so they can integrate with whatever logging framework is used in the integrated solution); especially valid if you're an API/Framework/OSS and you rel...
Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...blic static void Foo(Func<object, string> f)
{
Console.WriteLine(f.Method.GetParameters()[0].Name);
}
}
F#:
Class1.Foo(fun yadda -> "hello")
Result:
"arg" is printed (not "yadda").
As a result, library designers should either avoid these kinds of 'abuses', or else at ...
When to catch java.lang.Error?
In what situations should one catch java.lang.Error on an application?
16 Answers
16...
Invert “if” statement to reduce nesting
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A return in the middle of the method is not necessarily bad. It might be better to return immediately if it makes the intent of the code clearer. For example:
double getPayAmount() {
double result;
if (_isDead) result = deadAmount();
else {
if (_isSeparated) result...
Objective-C ARC: strong vs retain and weak vs assign
...
From the Transitioning to ARC Release Notes (the example in the section on property attributes).
// The following declaration is a synonym for: @property(retain) MyClass *myObject;
@property(strong) MyClass *myObject;
So strong is the ...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
...le extensions).
Wikipedia entries for each of the formats will give you quite a bit of information:
JPEG (or JPG, for the file extension; Joint Photographic Experts Group)
PNG (Portable Network Graphics)
BMP (Bitmap)
GIF (Graphics Interchange Format)
TIFF (or TIF, for the file extension; Tagged I...
Why is Swift compile time so slow?
...
Well, it turned out that Rob Napier was right. It was one single file (actually one method) that was causing the compiler to go berzek.
Now don't get me wrong. Swift does recompile all your files each time, but the great thing now...
String.equals versus == [duplicate]
...kens and stores them in an array of strings, and then compares a variable with the first home ... why isn't it working?
20 ...
How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
I'd like to write a test script or program that asserts that all DLL files in a given directory are of a particular build type.
...