Questions tagged [operators]
Operators are symbols that occur in nearly all programming and coding languages, used for performing calculations, comparisons, and assignments of data. Use this tag for any questions relating to operators, in any language, including things such as syntax, behaviour and use.
operators
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What's the deal with all the different Perl 6 equality operators? (==, ===, eq, eqv, ~~, =:=, ...)
Perl 6 seems to have an explosion of equality operators. What is =:=? What's the difference between leg and cmp? Or eqv and ===?
Does anyone have a good summary?
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Priority of C++ operators "&" and "->"
Given the following:
&row->count
Would &(row->count) be evaluated or (&row)->count be evaluated in C++?
Here's a great link for C++ precedence.
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What does the comma operator do? [duplicate]
What does the following code do in C/C++?
if (blah(), 5) {
//do something
}
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What are bitwise shift (bit-shift) operators and how do they work?
I've been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators)...
At a core level, what does bit-shifting (<<, >&...
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PHP alias @ function
I'm new to PHP and I'm confused seeing some examples calling a function with a @ prefix like @mysql_ping().
What is it for? Googling / searching is not much of a help since @ gets discarded and '...
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Suppress error with @ operator in PHP
In your opinion, is it ever valid to use the @ operator to suppress an error/warning in PHP whereas you may be handling the error?
If so, in what circumstances would you use this?
Code examples are ...
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How do I get a decimal value when using the division operator in Python?
For example, the standard division symbol '/' rounds to zero:
>>> 4 / 100
0
However, I want it to return 0.04. What do I use?
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How to prevent creating intermediate objects in cascading operators?
I use a custom Matrix class in my application, and I frequently add multiple matrices:
Matrix result = a + b + c + d; // a, b, c and d are also Matrices
However, this creates an intermediate matrix ...
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Dynamically created operators
I created a program using dev-cpp and wxwidgets which solves a puzzle.
The user must fill the operations blocks and the results blocks, and the program will solve it. I'm solving it using brute force, ...
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Why Does Ruby Only Permit Certain Operator Overloading
In Ruby, like in many other OO programming languages, operators are overloadable. However, only certain character operators can be overloaded.
This list may be incomplete but, here are some of the ...
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relational operator expression order
This is probably a silly question, but curiosity has gotten the better of me. I've been seeing code lately that seems to "reverse" the order of expressions for relational operators e.g.:
if (0 == ...
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How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators differ?
What is the difference between == and ===?
How exactly does the loosely == comparison work?
How exactly does the strict === comparison work?
What would be some useful examples?
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Haskell list difference operator in F#
Is there an equivalent operator to Haskell's list difference operator \\ in F#?
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What is the operator precedence order in Visual Basic 6.0?
What is the operator precedence order in Visual Basic 6.0 (VB6)?
In particular, for the logical operators.
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