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Didn't Java once have a Pair class? [duplicate]
... suggest to write special classes (which isn't that hard) like Point(x,y), Range(start, end) or Map.Entry(key, value).
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Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...eError: 'ascii' codec can't decode byte 0xc3 in position 0: ordinal not in range(128)
The failure comes from the fact that author does not contain only ASCII bytes (i.e. with values in [0; 127]), and unicode() decodes from ASCII by default (on many machines).
A robust solution is to explicitly gi...
Best way to alphanumeric check in JavaScript
...regexen don't have POSIX character classes, so you have to write character ranges manually:
if (!input_string.match(/^[0-9a-z]+$/))
show_error_or_something()
Here ^ means beginning of string and $ means end of string, and [0-9a-z]+ means one or more of character from 0 to 9 OR from a to z.
Mor...
Remove trailing zeros
...tes "The scaling factor is implicitly the number 10, raised to an exponent ranging from 0 to 28", which I understand as the decimal number will have at most 28 digits past the decimal point. Any number of zeros >= 28 should work.
– Thomas Materna
Oct 9 '12 a...
What Computer Science concepts should I know? [closed]
...t Math.
I suggest that you look into discrete mathematics. It has a wide range of useful problems starting with logical proofs which help you write conditions in code. Graph theory and combinatorics also help with complex problem resolution and algorithm optimization.
While we are on the subject...
Are C++ enums signed or unsigned?
... For example:
enum Fruit
{
Apple = 0,
Banana,
Pineapple,
Orange,
Kumquat
};
enum Fruit fruitVariable = Banana; // Okay, Banana is a member of the Fruit enum
fruitVariable = 1; // Error, 1 is not a member of enum Fruit even though it has the same value as banana.
...
Should I use Vagrant or Docker for creating an isolated environment? [closed]
... a provider directly on the host or any VM (Mac, Win). It can also spin up raw LXC if thats what someone wants (again, on the host or VM). Vagrant is interested in doing what is best to create a portable development environment, whether that means creating a VM or not.
– Mitche...
Html.RenderPartial giving me strange overload error?
...2fstackoverflow.com%2fquestions%2f5435893%2fhtml-renderpartial-giving-me-strange-overload-error%23new-answer', 'question_page');
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What is the size of an enum in C?
... I've worked with MacOS C++ compilers that do exploit the limited range of values in an enum to store them in smaller types. Can't remember if it was Metrowerks Codewarrior or XCode. This is within the C++ standard. You cannot assume sizeof(MyEnum) == sizeof(int) in general.
...
Fluent and Query Expression — Is there any benefit(s) of one over other?
... needs. Query syntax comes into its own when you want to leverage multiple range variables. This happens in three situations:
When using the let keyword
When you have multiple generators (from clauses)
When doing joins
Here's an example (from the LINQPad samples):
string[] fullNames = { "Anne W...