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Git for beginners: The definitive practical guide
...t that you asked that we not "simply" link to other resources, it's pretty foolish when there already exists a community grown (and growing) resource that's really quite good: the Git Community Book. Seriously, this 20+ questions in a question is going to be anything but concise and consistent. Th...
Ruby: Easiest Way to Filter Hash Keys?
...ou have the keys in a separate list, you can use the * notation:
keys = [:foo, :bar]
hash1 = {foo: 1, bar:2, baz: 3}
hash2 = hash1.slice(*keys)
=> {foo: 1, bar:2}
As other answers stated, you can also use slice! to modify the hash in place (and return the erased key/values).
...
How to append contents of multiple files into one file
...
@radical7 Thanks. Actually, my files are like foo_1, foo_2, foo_3. I tried to modify your code as - cat "$filename_"{1,2,3}".txt" , but it did not work.
– Steam
Aug 2 '13 at 0:09
...
Get exception description and stack trace which caused an exception, all as a string
...) + '\n {} {}'.format(excp.__class__,excp)
A simple demonstration:
def foo():
try:
something_invalid()
except Exception as e:
print(exception_to_string(e))
def bar():
return foo()
We get the following output when we call bar():
File "./test.py", line 57, in <...
Default parameters with C++ constructors [closed]
... rotationZ()const;
}
main()
{
// gets default rotations
Thingy2 * foo=new Thingy2().color(ret)
.length(1).width(4).height(9)
// gets default color and sizes
Thingy2 * bar=new Thingy2()
.rotationX(0.0).rotationY(PI),rotationZ(0.5*PI);
// everything specified.
...
C++, copy set to vector
...edited Feb 27 '11 at 13:50
Fred Foo
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answered Feb 17 '11 at 20:33
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How to get the current working directory in Java?
... your application, so could be something like e.g. /Users/george/workspace/FooBarProject).
– David
Sep 20 '13 at 10:19
1
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Why do we declare Loggers static final?
...
as opposed to:
private static final Logger log = LoggerFactory.getLogger(Foo.class);
The former way allows you to use the same logger name (name of the actual class) in all classes throughout the inheritance hierarchy. So if Bar extends Foo, both will log to Bar logger. Some find it more intuiti...
Manipulate a url string by adding GET parameters
...
$data = array('foo'=>'bar',
'baz'=>'boom',
'cow'=>'milk',
'php'=>'hypertext processor');
$queryString = http_build_query($data);
//$queryString = foo=bar&baz=boom&cow=milk&...
“NODE_ENV” is not recognized as an internal or external command, operable command or batch file
... run something like this (which works in Linux)
NODE_ENV=development node foo.js
the equivalent in Windows would be
SET NODE_ENV=development
node foo.js
running in the same command shell. You mentioned set NODE_ENV did not work, but wasn't clear how/when you executed it.
...