大约有 15,208 项符合查询结果（耗时：0.0345秒） [XML]
How to use OpenSSL to encrypt/decrypt files?
... Do not use the above command since there is no key derivation. Read more here: openssl weak key derivation
– jonasl
Apr 29 '16 at 13:25
...
Select first 4 rows of a data.frame in R
... character (matching the respective names):
df[row.index, column.index]
Read help(`[`) for more detail on this subject, and also read about index matrices in the Introduction to R.
share
|
improv...
Embedding DLLs in a compiled executable
...
Wow - I thought I finally found it, then I read this comment. It seems to be gone totally. Are there any forks?
– Mafii
Oct 8 '16 at 16:19
...
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
...
String.Empty versus “” [duplicate]
...e a lot of time thinking about it. Choose based on whatever you find more readable, or whatever convention is already being used in your project.
share
|
improve this answer
|
...
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...