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What is the best way to iterate over a dictionary?
...hat it is just syntactic sugar, why use it here? When someone is trying to read the code, they will have to jump around the code to determine the type of myDictionary (unless that is the actual name of course). I think using var is good when the type is obvious e.g. var x = "some string" but when i...
What exactly are “spin-locks”?
...gular locks (mutexes, critical sections etc), operating system puts your thread in the WAIT state and preempts it by scheduling other threads on the same core. This has a performance penalty if the wait time is really short, because your thread now has to wait for a preemption to receive CPU time ag...
What REST PUT/POST/DELETE calls should return by a convention?
... the link. :) It made me stop and think about the tool I'm using. After reading your post, and the RFC, I found myself referring to the RFC the rest of the night. It's helped me think of the process as an HTTP process first, and a rest process second. Much appreciated.
– ...
How to use enums in C++
.... EDIT: It seems like I am unknowingly using enums in a C++11 way if I am reading things right...
– Dean Knight
Aug 29 '12 at 17:20
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When is each sorting algorithm used? [closed]
...er the data, i.e. I/O-costs, dominate the runtime. If you need to do that, read up on "external sorting" which usually cover variants of merge- and heap sorts.
http://corte.si/posts/code/visualisingsorting/index.html and http://corte.si/posts/code/timsort/index.html also have some cool images compa...
Test whether string is a valid integer
... second. Would you mind explaining it so I can learn a little? I gather it reads, "At the start of the string (^), a minus sign (-) is optional (?), followed by any number of characters between zero and 9, inclusive" ... and what then might the +$ mean? Thanks.
– Richard T
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What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
...is an illegal index, since array indices are zero-based.
Your code should read
for (int i = 0; i < name.length; i++)
^
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What does -> mean in Python function definitions?
...:
def f(x: float) -> int:
return int(x)
: float tells people who read the program (and some third-party libraries/programs, e. g. pylint) that x should be a float. It is accessed as f.__annotations__['x'], and doesn't have any meaning by itself. See the documentation for more information:
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
...5.7.6 the Password column was renamed "authentication_string" Here you can read more about it: bugs.mysql.com/bug.php?id=76655
– IberoMedia
Feb 4 '18 at 17:05
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Correct way to detach from a container without stopping it
...f8e0676d6519e15c08b518
[berto@g6]$ docker attach test
# here I typed ^P^Q
read escape sequence
# i'm back to my prompt
[berto@g6]$ docker kill test; docker rm -v test
test
test
ctrl+c does work, BUT only when -t (without -i) is used to launch the container:
[berto@g6]$ docker run -t -d --name t...