大约有 16,000 项符合查询结果（耗时：0.0240秒） [XML]
Which one will execute faster, if (flag==0) or if (0==flag)?
...
I haven't seen any correct answer yet (and there are already some) caveat: Nawaz did point out the user-defined trap. And I regret my hastily cast upvote on "stupidest question" because it seems that many did not get it right and it gives room for a nice discussion on compiler op...
How to safely open/close files in python 2.4
...ry-finally blocks:
>>> with open('workfile', 'r') as f:
... read_data = f.read()
>>> f.closed
True
More here: https://docs.python.org/2/tutorial/inputoutput.html#methods-of-file-objects
share
...
Difference between GeoJSON and TopoJSON
...
And even though I did remember reading about "shared line segments", I still assumed "topo" stood for "topography", which it does not. Here's a nice read about the difference between "topology" and "topography" (the former is the origin of "topo" in topojs...
Convert an image (selected by path) to base64 string
...
Why even bother resaving it though? you can just read the file's bytes and convert those.
– Nyerguds
Feb 1 '18 at 12:43
1
...
SAML vs federated login with OAuth
... has been established, and now your app can act as you on Twitter. It can read your posts, as well as make new ones.
SAML - For SAML think of some type of "agreement" between two unrelated membership systems. In our case we can use US Airways and Hertz. There is no shared set of credentials that...
How is the Linux kernel tested ?
... but only reported via /sys/kernel/debug/kmemleak.
Kmemcheck traps every read and write to memory that was allocated dynamically (i.e. with kmalloc()). If a memory address is read that has not previously been written to, a message is printed to the kernel log. Also is a part of Linux Kernel
Fault...
What is the most efficient/elegant way to parse a flat table into a tree?
...lution is called Nested Sets, and it can be stored in the same table too. Read "Trees and Hierarchies in SQL for Smarties" by Joe Celko for a lot more information on these designs.
I usually prefer a design called Closure Table (aka "Adjacency Relation") for storing tree-structured data. It requi...
How do I return the response from an asynchronous call?
...modify it inside of a function? - Asynchronous code reference
→ If you already understand the problem, skip to the possible solutions below.
The problem
The A in Ajax stands for asynchronous . That means sending the request (or rather receiving the response) is taken out of the normal execution f...
How to make child process die after parent exits?
... This is a poor solution because the parent might have died already. Race condition. Correct solution: stackoverflow.com/a/17589555/412080
– Maxim Egorushkin
Dec 22 '15 at 17:49
...
How to pipe list of files returned by find command to cat to view all the files
...\;
(Everything between find and -exec are the find predicates you were already using. {} will substitute the particular file you found into the command (cat {} in this case); the \; is to end the -exec command.)
send output of one process as command line arguments to another process
command2 `co...