大约有 7,900 项符合查询结果（耗时：0.0294秒） [XML]
Why '&&' and not '&'?
...or would Windows have a performance counter for this, nor would there be a word to describe it, were it not a problem.
Ignorance about the lower levels and architecture does not make someone who is aware of them wrong.
Always try to understand the limitations of the hardware you are working on.
He...
Why should I use the keyword “final” on a method parameter in Java?
I can't understand where the final keyword is really handy when it is used on method parameters.
12 Answers
...
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
... was demonstrating that the author didn't understand the importance of the word 'average'. Many of the individual benchmarks are not 6.3 times faster. And if you use a different type of average you get a different value, so "6.3 x faster" is not an adequate summary of "geometric average is 6.3 x fas...
How many concurrent requests does a single Flask process receive?
...rrency we talk about in computer science is software concurrency.
In other words, there are layers of software implementation that abstract the bottom level CPU from us and make us think we are running code concurrently.
These "things" can be processes, which are units of code that get run concurre...
What are the differences between git remote prune, git prune, git fetch --prune, etc
...script that will remove all local branches that aren't tracked remotely. A word of caution: This will get rid of any branch that isn't tracked remotely regardless of whether it was merged or not.
If you guys see any issues with this please let me know and I'll fix it (etc. etc.)
Save it in a file ...
Difference between __str__ and __repr__?
...the __repr__, NOT the __str__, for the items it contains. And, despite the words on the subject found in typical docs, hardly anybody bothers making the __repr__ of objects be a string that eval may use to build an equal object (it's just too hard, AND not knowing how the relevant module was actuall...
How to avoid “if” chains?
...n what is called "opportunistic return" or "opportunistic exit." In other words, it breaks the pattern that each and every function should have exactly one point of exit. This is a problem for two reasons:
It rubs some people the wrong way, e.g. people who learned to code on Pascal have learned ...
Permutations in JavaScript?
...y (including undefined), in which case it will be an empty array. In other words, it's a less than ideal way to provide the function parameter with a default value.
– Mr. Lavalamp
May 19 '16 at 21:52
...
How to filter SQL results in a has-many-through relation
... AND y.club_id = 10
)
Dynamic number of club memberships
In other words: varying number of filters. This question asked for exactly two club memberships. But many use cases have to prepare for a varying number.
Detailed discussion in this related later answer:
Using same column multiple ...
Can I mask an input text in a bat file?
...le to execute some other programs. In this case I need to prompt for a password. Do I have any way to mask the input text? I don't need to print ******* characters instead of input characters. Linux's Password prompt behavior (Print nothing while typing) is enough.
...