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How to access environment variable values?
I set an environment variable that I want to access in my Python application. How do I get its value?
12 Answers
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How do I specify a pointer to an overloaded function?
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You can use static_cast<>() to specify which f to use according to the function signature implied by the function pointer type:
// Uses the void f(char c); overload
std::for_each(s.begin(), s.end(), static_cast<void (*)(char)>(&f));
// Uses the void f(int i); overload
std::...
Optimum way to compare strings in JavaScript? [duplicate]
I am trying to optimize a function which does binary search of strings in JavaScript.
3 Answers
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What is the best way to implement constants in Java? [closed]
...erfectly acceptable, probably even the standard.
(public/private) static final TYPE NAME = VALUE;
where TYPE is the type, NAME is the name in all caps with underscores for spaces, and VALUE is the constant value;
I highly recommend NOT putting your constants in their own classes or interfaces.
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Object comparison in JavaScript [duplicate]
What is the best way to compare objects in JavaScript?
10 Answers
10
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Convert a Unix timestamp to time in JavaScript
I am storing time in a MySQL database as a Unix timestamp and that gets sent to some JavaScript code. How would I get just the time out of it?
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How to convert a string with comma-delimited items to a list in Python?
How do you convert a string into a list?
14 Answers
14
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How do I create a random alpha-numeric string in C++?
I'd like to create a random string, consisting of alpha-numeric characters. I want to be able to be specify the length of the string.
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What does the plus sign do in '+new Date'
I've seen this in a few places
7 Answers
7
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Empty arrays seem to equal true and false at the same time
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You're testing different things here.
if (arr) called on object (Array is instance of Object in JS) will check if the object is present, and returns true/false.
When you call if (arr == false) you compare values of this object and t...