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Using semicolon (;) vs plus (+) with exec in find
...ind . -name 'test*' -exec echo {} \;
./test.c
./test.cpp
./test.new
./test.php
./test.py
./test.sh
With a plus, the command echo is called once only. Every file found is passed in as an argument.
$ find . -name 'test*' -exec echo {} \+
./test.c ./test.cpp ./test.new ./test.php ./test.py ./test.s...
How to copy a file from one directory to another using PHP?
Say I've got a file test.php in foo directory as well as bar . How can I replace bar/test.php with foo/test.php using PHP ? I'm on Windows XP, a cross platform solution would be great but windows preferred.
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Memoization in Haskell?
...tion (fix)
Let's define f, but make it use 'open recursion' rather than call itself directly.
f :: (Int -> Int) -> Int -> Int
f mf 0 = 0
f mf n = max n $ mf (n `div` 2) +
mf (n `div` 3) +
mf (n `div` 4)
You can get an unmemoized f by using fix f
This...
Can virtual functions have default parameters?
...ference the defaults denoted in the derived class are used. There is an example below the Standard quotation that demonstrates this.
Some compilers may do something different, but this is what the C++03 and C++11 Standards say:
8.3.6.10:
A virtual function call (10.3) uses
the default a...
Getting the caller function name inside another function in Python? [duplicate]
...on 2 each frame record is a list. The third element in each record is the caller name. What you want is this:
>>> import inspect
>>> def f():
... print inspect.stack()[1][3]
...
>>> def g():
... f()
...
>>> g()
g
For Python 3.5+, each frame record i...
What characters are valid for JavaScript variable names?
...ou an idea of how wrong Anthony Mills' answer is: if you were to summarize all these rules in a single ASCII-only regular expression for JavaScript, it would be 11,236 characters long. Here it is:
// ES5.1 / Unicode 6.1
/^(?!(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|v...
Why are there two kinds of functions in Elixir?
...bove as an anonymous function. You mentioned it yourself:
other_function(&hello(&1))
And then you asked, why I cannot simply pass it as hello as in other languages? That's because functions in Elixir are identified by name and arity. So a function that expects two arguments is a different...
Disable sorting for a particular column in jQuery DataTables
...
This is what you're looking for:
$('#example').dataTable( {
"aoColumnDefs": [
{ 'bSortable': false, 'aTargets': [ 1 ] }
]
});
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impr...
How to get full path of a file?
...
The following usually does the trick:
echo "$(cd "$(dirname "$1")" && pwd -P)/$(basename "$1")"
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get just the integer from wc in bash
... does, you just pass in the proper parameters that you would anyway. for example, if you do wc -c < file name, it will give you just the integer number of bytes and nothing else.
– BananaNeil
Jan 30 '12 at 21:07
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