大约有 36,200 项符合查询结果（耗时：0.0559秒） [XML]
Finding diff between current and last version
...HEAD
Since comparison to HEAD is default you can omit it (as pointed out by Orient):
git diff @^
git diff HEAD^
git diff commit_id
Warnings
@ScottF and @Panzercrisis explain in the comments that on Windows the ~ character must be used instead of ^.
...
How do I copy to the clipboard in JavaScript?
...ryCommandSupported('copy') should return true if the command "is supported by the browser".
and document.queryCommandEnabled('copy') return true if the document.execCommand('copy') will succeed if called now. Checking to ensure the command was called from a user-initiated thread and other requiremen...
Python: using a recursive algorithm as a generator
... permutation
flatten allows us to continue progress in another generator by simply yielding it, instead of iterating through it and yielding each item manually.
Python 3.3 will add yield from to the syntax, which allows for natural delegation to a sub-generator:
def getPermutations(string, pre...
How to indicate param is optional using inline JSDoc?
...h, otherwise the argument won't be marked as optional (even if it preceded by already optional arguments):
function demo(
/** @type {String} */ mandatory,
/** @type {Number} */ optional1 = 0,
/** @type {Number} optional2 = undefined,
)
If you hover over demo in your IDE you should see both ...
Download a single folder or directory from a GitHub repo
...
Update Sep. 2016: there are a few tools created by the community that can do this for you:
GitZip (Credits to Kino - upvote his answer right here!)
DownGit (Credits to Minhas Kamal - upvote his answer right here!)
Git doesn't support this, but Github does via SVN. If...
What is the difference between public, protected, package-private and private in Java?
... it is declared can see it.
Package Private
It can only be seen and used by the package in which it was declared. This is the default in Java (which some see as a mistake).
Protected
Package Private + can be seen by subclasses or package members.
Public
Everyone can see it.
Published
Visibl...
Are non-synchronised static methods thread safe if they don't modify static class variables?
...utable object can access inconsistent state if the object is being mutated by another thread, even if the other thread is properly synchronized. Both threads need appropriate synchronization for thread safety to be maintained.
– Warren Dew
Jul 22 '17 at 15:39
...
Context switches much slower in new linux kernels
...able all of these power saving features:
On Ubuntu 12.04, you can do this by adding them to the GRUB_CMDLINE_LINUX_DEFAULT entry in /etc/default/grub and then running update-grub. The boot parameters to add are:
intel_idle.max_cstate=0 processor.max_cstate=0 idle=poll
Here are the gory details a...
How do you get a timestamp in JavaScript?
...
While +new Data is clever, it isn't readable by other devs. Date.now() is clearer and ensures everyone else knows what's going on.
– Harry Sadler
Mar 29 '17 at 19:06
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How can I get the SQL of a PreparedStatement?
..., with the placeholders and the list of data
Or to "build" some SQL query "by hand".
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