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What is the correct way to document a **kwargs parameter?
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The example is likely subprocess.call(*popenargs, **kwargs). It is documented as subprocess.call(args, *, stdin=None, stdout=None, stderr=None, shell=False) where everything after the * is the recognized keys in **kwargs (Or at least the ones frequently used...
What makes Lisp macros so special?
...ros for code but that is best illustrated below:
So we can define a macro called lcomp (short for list comprehension). It's syntax will be exactly like the python that we used in the example [x for x in range(10) if x % 2 == 0] - (lcomp x for x in (range 10) if (= (% x 2) 0))
(defmacro lcomp (...
UITableView row animation duration and completion callback
...to either specify the duration for UITableView row animations, or to get a callback when the animation completes?
10 Answer...
@property retain, assign, copy, nonatomic in Objective-C
...directly own, such as delegates.
Keep in mind retain and assign are basically interchangeable when garbage collection is enabled.
@property (assign) NSInteger year;
strong is a replacement for retain.
It comes with ARC.
@property (nonatomic, strong) AVPlayer *player;
getter=method If ...
POST JSON fails with 415 Unsupported media type, Spring 3 mvc
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No idea why this isn't more documented. This problem made me waste so much time. Thank you very much!
– Hugo Nava Kopp
Nov 30 '16 at 10:58
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Django set field value after a form is initialized
...e after the form was submitted, you can use something like:
if form.is_valid():
form.cleaned_data['Email'] = GetEmailString()
Check the referenced docs above for more on using cleaned_data
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What does the “===” operator do in Ruby? [duplicate]
...lleagues, the convention is that === is the case subsumption operator. Basically, it's a boolean operator which asks the question "If I have a drawer labelled a would it make sense to put b in that drawer?"
An alternative formulation is "If a described a set, would b be a member of that set?"
For ...
How to run Rails console in the test environment and load test_helper.rb?
... other tests. I'd like to go to the console and run different Factory Girl calls to check out what's happening. For example, I'd like to go in there are do...
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R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?
...on(x)
{
eval.parent(substitute(x <- x + 1))
}
In that case you would call
x <- 10
inc(x)
However, it introduces function call overhead, so it's slower than typing x <- x + 1 yourself. If I'm not mistaken increment operator was introduced to make job for compiler easier, as it could co...
Nested function in C
...her function body, though.
E.g.
void f(void)
{
// Declare a function called g
void g(void);
// Call g
g();
}
// Definition of g
void g(void)
{
}
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