大约有 32,000 项符合查询结果（耗时：0.0434秒） [XML]
How do I choose between Semaphore and SemaphoreSlim?
... that SemaphoreSlim does not permit named semaphores, which can be system-wide. This would mean that a SemaphoreSlim could not be used for cross-process synchronization.
The MSDN documentation also indicates that SemSlim should be used when "wait times are expected to be very short". That would usu...
How do I turn a python datetime into a string, with readable format date?
...t;datetime.now().strftime("%s %B %d, %Y" % "Andre")
Traceback (most recent call last):
File "<pyshell#11>", line 1, in <module>
datetime.now().strftime("%s %B %d, %Y" % "Andre")
TypeError: not enough arguments for format string
And so on...
...
Automatically add all files in a folder to a target using CMake?
I am considering switching a cross platform project from separate build management systems in Visual C++, XCode and makefiles to CMake.
...
How to only find files in a given directory, and ignore subdirectories using bash
I looked at other similar questions, but didn't find one that would enable me to grasp the concept and make it applicable to my situation based on my limited time. I'm simply running the find command to find certain files, but some files in sub-directories have the same name which I want to ignore. ...
Small Haskell program compiled with GHC into huge binary
...e dynamically linked! All the Haskell libraries are copied in verbatim.
Aside: since this is a graphics-intensive app, I'd definitely compile with ghc -O2
There's two things you can do.
Stripping symbols
An easy solution: strip the binary:
$ strip A
$ du -hs A
5.8M A
Strip discards symbols...
What is the difference between Non-Repeatable Read and Phantom Read?
...
and
A phantom read occurs when, in the course of a transaction, two identical queries are executed, and the collection of rows returned by the second query is different from the first.
Simple examples:
User A runs the same query twice.
In between, User B runs a transaction and commits.
N...
Linux c++ error: undefined reference to 'dlopen'
... like a charm, simply add ${CMAKE_DL_LIBS} to the target_link_libraries() call
share
|
improve this answer
|
follow
|
...
libxml install error using pip
...t question).
You probably need to install some package, and it's probably called python-dev or python-devel.
sudo yum install python-devel
or
sudo aptitude install python-dev
Or somesuch.
share
|
...
How can I list all collections in the MongoDB shell?
...lections()
Non-JavaScript (shell only):
show collections
The reason I call that non-JavaScript is because:
$ mongo prodmongo/app --eval "show collections"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
2016-10-26T19:34:34.886-0400 E QUERY [thread1] SyntaxError: missing ; before ...
JSON: why are forward slashes escaped?
... when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out.
Some of Microsoft's ASP.NET Ajax/JSON API's use this loophole to add extra information, e.g., a datetime will be sent as "\/Date(milliseconds)\/". (Yuck)
...