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What's the shortest code to cause a stack overflow? [closed]
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All these answers and no Befunge? I'd wager a fair amount it's shortest solution of them all:
1
Not kidding. Try it yourself: http://www.quirkster.com/iano/js/befunge.html
EDIT: I guess I need to explain this one. The 1 o...
Python naming conventions for modules
I have a module whose purpose is to define a class called "nib". (and a few related classes too.) How should I call the module itself? "nib"? "nibmodule"? Anything else?
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OS X Bash, 'watch' command
...expand parameters before running the script, so in a directory with files "foo" and "bar", you'd run cat foo bar every 2 seconds. What behaviour were you expecting?
– ghoti
Aug 19 '13 at 14:33
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java: HashMap not working
...ittle difference in the code. Auto-boxing means you can write:
myMap.put("foo", 3);
instead of:
myMap.put("foo", new Integer(3));
Auto-boxing means the first version is implicitly converted to the second. Auto-unboxing means you can write:
int i = myMap.get("foo");
instead of:
int i = myMa...
“static const” vs “#define” vs “enum”
...sion for static arrays at function scope; both (2) and (3) can.
Under C99, all of these can be used for local arrays. Technically, using (1) would imply the use of a VLA (variable-length array), though the dimension referenced by 'var' would of course be fixed at size 5.
(1) cannot be used in place...
Mockito - difference between doReturn() and when()
...rn() has the big disadvantage of turning into YODA style coding of method calls. The thing later comes written down first that is. Most people read left to right; so you now have to constantly remember to reverse the return-when logic in your head.
– GhostCat
F...
Checking if a double (or float) is NaN in C++
...nly if f is NaN.
Note that, as some comments below have pointed out, not all compilers respect this when optimizing code.
For any compiler which claims to use IEEE floating point, this trick should work. But I can't guarantee that it will work in practice. Check with your compiler, if in doubt.
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What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?
...that it can properly query for the matching doc. This is an ObjectId but "foo" is not a valid ObjectId so the cast fails.
This doesn't happen with 41224d776a326fb40f000001 because that string is a valid ObjectId.
One way to resolve this is to add a check prior to your findById call to see if id i...
How to use Swift @autoclosure
...look at example
func testClosures() {
//closures
XCTAssertEqual("fooWithClosure0 foo0", fooWithClosure0(p: foo0))
XCTAssertEqual("fooWithClosure1 foo1 1", fooWithClosure1(p: foo1))
XCTAssertEqual("fooWithClosure2 foo2 3", fooWithClosure2(p: foo2))
XCTAssertEqual("fooWithClosur...
How do I find numeric columns in Pandas?
Let's say df is a pandas DataFrame.
I would like to find all columns of numeric type.
Something like:
11 Answers
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