大约有 41,000 项符合查询结果（耗时：0.0632秒） [XML]
Why do I need to explicitly push a new branch?
... I saw that when I did git push my branch was not uploaded to the repository. I had to actually do: git push -u origin --all .
Why is this? Isn't a branch a new change to be pushed by default? Why do I need to run the second command?
...
Detect if a NumPy array contains at least one non-numeric value?
...e which is non-numeric. If a non-numeric value is found I will raise an error (because the calculation should only return a numeric value). The number of dimensions of the input array is not known in advance - the function should give the correct value regardless of ndim. As an extra complication th...
Compiling C++ on remote Linux machine - “clock skew detected” warning
...ansferring files using the latter and compiling and running them with the former. My work so far has been performed in the university's labs, but today I have been doing some work at home that generated an interesting warning.
...
Increment a value in Postgres
...ch is an integer) in a field in a postgres table and increment it by one. For example if the table 'totals' had 2 columns, 'name' and 'total', and Bill had a total of 203, what would be the SQL statement I'd use in order to move Bill's total to 204?
...
Ant: How to execute a command for each file in directory?
I want to execute a command from an Ant buildfile, for each file in a directory.
I am looking for a platform-independent solution.
...
Understanding the ngRepeat 'track by' expression
...ies understanding how the track by expression of ng-repeat in angularjs works. The documentation is very scarce: http://docs.angularjs.org/api/ng/directive/ngRepeat
...
Python list subtraction operation
...
Use a list comprehension:
[item for item in x if item not in y]
If you want to use the - infix syntax, you can just do:
class MyList(list):
def __init__(self, *args):
super(MyList, self).__init__(args)
def __sub__(self, other):
re...
Propagate all arguments in a bash shell script
...
This does this work for pure pass through of quoted/escaped strings: Observe: cat rsync_foo.sh #!/bin/bash echo "$@" rsync "$@" ./rsync_foo.sh -n "bar me" bar2 bar me bar2skipping directory bar me Is it pos...
Lock-free multi-threading is for real threading experts
...operation
retry if it fails
(*optional: depends on the data structure/algorithm)
The last bit is eerily similar to a spinlock. In fact, it is a basic spinlock. :)
I agree with @nobugz on this: the cost of the interlocked operations used in lock-free multi-threading is dominated by the cache and m...
jQuery: keyPress Backspace won't fire?
...
Why would keyup fire for Backspace when keypress won't?
– Aaron Digulla
Jan 14 '11 at 11:11
...