大约有 44,000 项符合查询结果（耗时：0.0790秒） [XML]
How do I efficiently iterate over each entry in a Java Map?
...
To summarize the other answers and combine them with what I know, I found 10 main ways to do this (see below). Also, I wrote some performance tests (see results below). For example, if we want to find the sum of all of the keys and values of a map, we can write:
Using iterator and Ma...
What is the purpose of the word 'self'?
...stance attributes. That's why assigning to an instance attribute needs to know what instance to assign to, and that's why it needs self..
share
|
improve this answer
|
follow...
What's the difference between “Solutions Architect” and “Applications Architect”? [closed]
...ect. Application architects also often mentor and/or lead developers, and know the code of their responsible application(s) well.
When an organization has so many applications and infrastructure inter-dependencies that it is a full-time job to ensure their alignment and strategy without being involv...
Why {} + {} is NaN only on the client side? Why not in Node.js?
...tion' && /^[\r\n\s]*function/.test(evalCmd) || e) {
// Now as statement without parens.
self.eval(evalCmd, self.context, 'repl', finish);
}
else {
finish(null, ret);
}
}
);
This acts just like running ({}+{}) in the Chrome dev...
How to use conditional breakpoint in Eclipse?
I want to know how to place a conditional breakpoint in Eclipse. I have a code like:
4 Answers
...
What is causing “Unable to allocate memory for pool” in PHP?
... when servers were 64MB and most scripts were using one php file per page. Nowadays solutions like Magento require more than 10k files (~60Mb in APC). You should allow enough memory so most of php files are always cached. It's not a waste, it's more efficient to keep opcode in ram rather than having...
How do you get the magnitude of a vector in Numpy?
...
Also, for matrices comprised of vectors, np.linalg.norm now has a new axis argument, discussed here: stackoverflow.com/a/19794741/1959808
– Ioannis Filippidis
Nov 18 '13 at 9:12
...
How does setting baselineAligned to false improve performance in LinearLayout?
...one anymore. What are the side-effects of this? Does the work that we're now avoiding have the capability of yielding different results?
– lhunath
Mar 26 '13 at 20:29
31
...
How should I write tests for Forms in Django?
...
self.assertContains(response, "Invalid message here", 1, 200)
But I see now (2018) there is a whole crowd of applicable asserts available:
assertRaisesMessage
assertFieldOutput
assertFormError
assertFormsetError
Take your pick.
...
Getting an empty JQuery object
...it by using PHP instead of jQuery so I can't really dig more into it right now.
– cregox
Mar 2 '11 at 19:02
2
...