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How to sort with lambda in Python
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Use
a = sorted(a, key=lambda x: x.modified, reverse=True)
# ^^^^
On Python 2.x, the sorted function takes its arguments in this order:
sorted(iterable, cmp=None, key=None, reverse=False)
so without the key=, the function you pass in will...
What's the purpose of META-INF?
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Generally speaking, you should not put anything into META-INF yourself. Instead, you should rely upon whatever you use to package up your JAR. This is one of the areas where I think Ant really excels: specifying JAR file manifes...
Is SonarQube Replacement for Checkstyle, PMD, FindBugs?
...fect policies do not need that memory. Just keep your code base clean 100% all the time.
– Christian Hujer
Jan 7 at 20:04
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How to concatenate strings in twig
...like Alessandro said, and here it is in the documentation:
~: Converts all operands into strings and concatenates them. {{ "Hello
" ~ name ~ "!" }} would return (assuming name is 'John') Hello John!. – http://twig.sensiolabs.org/doc/templates.html#other-operators
And here is an example so...
Compare if two variables reference the same object in python
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That’s what is is for: x is y returns True if x and y are the same object.
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...here are a couple of differences, though in practical terms they're not usually big ones.
There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll see why), so we have:
var a = 0; // 1
let a = 0; // 1...
How to upgrade all Python packages with pip?
Is it possible to upgrade all Python packages at one time with pip ?
55 Answers
55
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How can I make a horizontal ListView in Android? [duplicate]
...starting point. I'll be damned if I'm going to roll my own ListView, when all I want is to take the thing and turn it on its side. \rant
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Get name of currently executing test in JUnit 4
...ic.
JUnit 4.7.x - 4.8.x
The following approach will print method names for all tests in a class:
@Rule
public MethodRule watchman = new TestWatchman() {
public void starting(FrameworkMethod method) {
System.out.println("Starting test: " + method.getName());
}
};
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Best way to check for nullable bool in a condition expression (if …)
I was wondering what was the most clean and understandable syntax for doing condition checks on nullable bools.
12 Answers...