大约有 47,000 项符合查询结果（耗时：0.0735秒） [XML]
Haskell error parse error on input `='
...
160
In GHCi 7.x or below, you need a let to define things in it.
Prelude> let f x = x * 2
Prelud...
Get current batchfile directory
...You can get the name of the batch script itself as typed by the user with %0 (e.g. scripts\mybatch.bat). Parameter extensions can be applied to this so %~dp0 will return the Drive and Path to the batch script (e.g. W:\scripts\) and %~f0 will return the full pathname (e.g. W:\scripts\mybatch.cmd).
Y...
Why does C++ rand() seem to generate only numbers of the same order of magnitude?
...
There are only 3% of numbers between 1 and 230 which are NOT between 225 and 230. So, this sounds pretty normal :)
Because 225 / 230 = 2-5 = 1/32 = 0.03125 = 3.125%
share
|
...
Include all files in a folder in a single bundle
... |
edited Feb 11 '15 at 0:38
daniellmb
31.2k44 gold badges4747 silver badges6060 bronze badges
answere...
Python: Tuples/dictionaries as keys, select, sort
...ies of fruits of different colors, e.g., 24 blue bananas, 12 green apples, 0 blue strawberries and so on.
I'd like to organize them in a data structure in Python that allows for easy selection and sorting. My idea was to put them into a dictionary with tuples as keys, e.g.,
...
Is Hash Rocket deprecated?
... |
edited Sep 3 at 8:01
sandstrom
12k55 gold badges5757 silver badges5959 bronze badges
answered Ap...
A regex to match a substring that isn't followed by a certain other substring
...--------------------
.* any character except \n (0 or more times
(matching the most amount possible))
--------------------------------------------------------------------------------
bar 'bar'
---------------------------...
How can I remove 3 characters at the end of a string in php?
...
Just do:
echo substr($string, 0, -3);
You don't need to use a strlen call, since, as noted in the substr docs:
If length is given and is negative, then that many characters will be omitted from the end of string
...
How to make execution pause, sleep, wait for X seconds in R?
...ible
}
testit(3.7)
Yielding
> testit(3.7)
user system elapsed
0.000 0.000 3.704
share
|
improve this answer
|
follow
|
...
Evaluating a mathematical expression in a string
...ath
import operator
__author__ = 'Paul McGuire'
__version__ = '$Revision: 0.0 $'
__date__ = '$Date: 2009-03-20 $'
__source__ = '''http://pyparsing.wikispaces.com/file/view/fourFn.py
http://pyparsing.wikispaces.com/message/view/home/15549426
'''
__note__ = '''
All I've done is rewrap Paul McGuire's ...