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How to remove files and directories quickly via terminal (bash shell) [closed]
...rm -rf.
Also note that what you're learning applies to bash on every Unix OS: OS X, Linux, FreeBSD, etc. In fact, rm's syntax is the same in pretty much every shell on every Unix OS. OS X, under the hood, is really a BSD Unix system.
...
Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
... what the relevant properties are that we're looking for. Looking at your post, I suggest:
What time is measured by the clock? (real, user, system, or, hopefully not, wall-clock?)
What is the precision of the clock? (s, ms, µs, or faster?)
After how much time does the clock wrap around? Or is the...
PHP parse/syntax errors; and how to solve them
... trying to dereference constants (before PHP 5.6) as arrays:
$var = const[123];
⇑
At least PHP interprets that const as a constant name.
If you meant to access an array variable (which is the typical cause here), then add the leading $ sigil - so it becomes a $varname.
You are trying to...
Clearing purchases from iOS in-app purchase sandbox for a test user
...t you don't really have to verify your test user email. you can simply put 123@123.com with specify password(that you are still going to use the password in sandbox mode) and it still work. I just tested last night.
– sooon
May 1 '14 at 12:24
...
How do I create a URL shortener?
...on f. This is necessary so that you can find a inverse function g('abc') = 123 for your f(123) = 'abc' function. This means:
There must be no x1, x2 (with x1 ≠ x2) that will make f(x1) = f(x2),
and for every y you must be able to find an x so that f(x) = y.
How to convert the ID to a shortened...
Parse config files, environment, and command-line arguments, to get a single collection of options
...iguration file parsing ( configparser ), environment variable reading ( os.environ ), and command-line argument parsing ( argparse ). I want to write a program that does all those, and also:
...
JavaScript equivalent of jQuery's extend method
...42,
prop3: true,
prop4: 20.16,
};
const obj2 = {
prop4: 77.123,
propNew1: 'newVal1',
propNew2: 71,
};
assert.deepEqual(utils.extend(obj1, obj2), {
prop1: 'val1',
prop2: 42,
prop3: true,
prop4: 77.123,
propNew1: 'newVal1',
propNew2: 71,
});
});
i...
Random hash in Python
...
I would've used os.urandom because wanting an MD5 hash might mean wanting a secure one.
– Unknown
Jun 11 '09 at 22:58
9
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App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...建点击数字过程按照计算器的使用习惯，如果要输入数字123，会依次点击三个数字键，但三个数字的排列要用程序来处理，这里存在两种情况：当后数=0时，即，当用户输入第一个数字时，让后数直接等于输入的数字；当用户接...
Get css top value as number not as string?
...css(prop)) || 0;
};
Usage:
$('#elem').cssInt('top'); // e.g. returns 123 as an int
$('#elem').cssFloat('top'); // e.g. Returns 123.45 as a float
Test fiddle on http://jsfiddle.net/TrueBlueAussie/E5LTu/
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