大约有 16,000 项符合查询结果（耗时：0.0259秒） [XML]
Download data url file
... the same trick in other server side technologies, such as Python, ASP.NET etc
– Andrew Newdigate
Dec 16 '11 at 16:27
...
Difference between null and empty (“”) Java String
...u can convert it to lower case, look up the index of some character in it, etc. The null string null is "no string at all." It doesn't have a length because it's not a string at all. Trying to apply any standard string operation to the null string will cause a NullPointerException at runtime.
...
Recursively counting files in a Linux directory
...s).
Remarks:
the first line is a count of files, directories, symlinks, etc all together, that's why it is bigger than the second line.
the --dry-run (or -n for short) option is important to not actually transfer the files!
I used the -x option to "don't cross filesystem boundaries", which means ...
Exit single-user mode
...aced with an error message that the given database is in single user mode, etc.
– youcantryreachingme
Apr 10 '19 at 3:42
...
How to increment datetime by custom months in python without using library [duplicate]
...t works just like timedelta but for calendar months rather than days/hours/etc.
Here's an example:
from monthdelta import MonthDelta
def prev_month(date):
"""Back one month and preserve day if possible"""
return date + MonthDelta(-1)
Compare that to the DIY approach:
def prev_month(dat...
Deserialize JSON with C#
...y (package) that remains all anonymous: "JSONObject["param"].JSONarray(5)" etc
– sports
Apr 4 '14 at 14:06
2
...
How to programmatically determine the current checked out Git branch [duplicate]
...
That can be used within $() and passed easily in Bash, Powershell, Perl, etc. It isn't fooled if you have several branches on the commit you are on, and if you currently aren't on a branch, it simply replies with "HEAD".
Alternatively, you can use
git symbolic-ref --short -q HEAD
Which will g...
Importing files from different folder
...t be restricted from certain system changes (creating or modifying a file, etc) like during testing.
– Scott Prive
Mar 3 '16 at 18:59
37
...
How to 'grep' a continuous stream?
...
Turn on grep's line buffering mode when using BSD grep (FreeBSD, Mac OS X etc.)
tail -f file | grep --line-buffered my_pattern
You don't need to do this for GNU grep (used on pretty much any Linux) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX).
...
Convert integer into byte array (Java)
...er what size the input integer is. If you only want 2 bytes, use putShort, etc ...
– bvdb
Jan 26 '15 at 9:07
|
show 2 more comments
...