大约有 48,000 项符合查询结果（耗时：0.0729秒） [XML]
Creating temporary files in bash
...voke mktemp something like
mydir=$(mktemp -d "${TMPDIR:-/tmp/}$(basename $0).XXXXXXXXXXXX")
which creates a temporary directory I can work in, and in which I can safely name the actual files something readable and useful.
mktemp is not standard, but it does exist on many platforms. The "X"s will...
Microsecond timing in JavaScript
... It returns the number of microseconds in the fractional (e.g. a value of 1000.123 is 1 second and 123 microseconds).
now() is monotonically increasing. This is important as Date.getTime() can possibly jump forward or even backward on subsequent calls. Notably, if the OS's system time is updated (...
How to construct a set out of list items in python?
...
answered Apr 2 '13 at 16:02
mgilsonmgilson
249k4848 gold badges507507 silver badges609609 bronze badges
...
Random row selection in Pandas dataframe
...me(x, n):
return x.ix[random.sample(x.index, n)]
Note: As of Pandas v0.20.0, ix has been deprecated in favour of loc for label based indexing.
share
|
improve this answer
|
...
What does the (unary) * operator do in this Ruby code?
...
answered May 27 '09 at 23:27
molfmolf
66.4k1313 gold badges129129 silver badges114114 bronze badges
...
Getting the current page
...rollView.frame.size.width;
NSInteger page = (scrollView.contentOffset.x + (0.5f * width)) / width;
share
|
improve this answer
|
follow
|
...
ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
...abled):
run the command vim /etc/mysql/my.cnf
comment bind-address = 127.0.0.1 using the # symbol
restart your mysql server once.
Update
In Step 1, if you cannot find bind-address in the my.cnf file, look for it in /etc/mysql/mysql.conf.d/mysqld.cnf file.
Update in case of MySQL replication en...
Apache: “AuthType not set!” 500 Error
...ver for a project and when I try to request localhost/index.html, I get a 500 error and I see this in the error log:
6 Answ...
Comparing two CGRects
...
250
Use this:
if (CGRectEqualToRect(self.view.frame, rect)) {
// do some stuff
}
...
C++ equivalent of java's instanceof
...
202
Try using:
if(NewType* v = dynamic_cast<NewType*>(old)) {
// old was safely casted to...