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Asking the user for input until they give a valid response
...ak out of the loop when you're satisfied.
When Your Input Might Raise an Exception
Use try and except to detect when the user enters data that can't be parsed.
while True:
try:
# Note: Python 2.x users should use raw_input, the equivalent of 3.x's input
age = int(input("Please...
CSS hide scroll bar if not needed
...s will be displayed and I want to hide the scroll bar if content does not exceed the current width.
5 Answers
...
What does `void 0` mean? [duplicate]
...
What does void 0 mean?
void[MDN] is a prefix keyword that takes one argument and always returns undefined.
Examples
void 0
void (0)
void "hello"
void (new Date())
//all will return undefined
What's the point of that?
It seems pretty useless, doesn't it? If it alw...
How do I pass JavaScript variables to PHP?
...
@sergey, so i need to use ajax? Actually, i'm familliar with that.
– SUN Jiangong
Dec 18 '09 at 10:08
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Abstract class in Java
...ws the subclass to be interchanged with all other subclasses.
Here's an example:
abstract public class AbstractClass
{
abstract public void abstractMethod();
public void implementedMethod() { System.out.print("implementedMethod()"); }
final public void finalMethod() { System.out.print...
Get GPS location from the web browser
...ll the browser support for geolocation is pretty good, all major browsers except ie7 and ie8 (and opera mini). IE9 does the job but is the worst performer. Checkout caniuse.com:
http://caniuse.com/#search=geol
Also you need the approval of your user to access their location, so make sure you check...
“Failed to load platform plugin ”xcb“ ” while launching qt5 app on linux without qt installed
I wrote application for linux which uses Qt5.
17 Answers
17
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how to convert binary string to decimal?
...ic literals for integers, so if the binary string is immutable, as in the example code in the question, one could just type it in as it is with the prefix 0b or 0B:
var binary = 0b1101000; // code for 104
console.log(binary); // prints 104
...
How do I sort an array of hashes by a value in the hash?
This Ruby code is not behaving as I would expect:
4 Answers
4
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Line continuation for list comprehensions or generator expressions in python
...
[x
for
x
in
(1,2,3)
]
works fine, so you can pretty much do as you please. I'd personally prefer
[something_that_is_pretty_long
for something_that_is_pretty_long
in somethings_that_are_pretty_long]
The reason why...