Haskell infix function application precedence

The Haskell 98 Report has a section on Operator Applications that clears it up: An operator is either an operator symbol, such as + or $$, or is an ordinary identifier enclosed in grave accents (backquotes), such as `op`. For example, instead of writing the prefix application op x y, one can write the infix … Read more

Is it safe to rely on Python function arguments evaluation order? [duplicate]

Quoting from the reference documentation: Python evaluates expressions from left to right. So yes, you can count on that (with one exception, see below). A call (the (…) part after a primary, such as a function name) is just another expression primary, and the arguments for the call are just more expressions. Note: There is … Read more

Does the order of operations change within an if expression?

logical operators fall below increment operations in the order of precedence. Order of precedence is not order of execution. They’re completely different concepts. Order of precedence only affects order of execution to the extent that operands are evaluated before their operator, and order of precedence helps tell you what the operands are of each operator. … Read more

Who defines operator precedence and associativity, and how does it relate to order of evaluation?

Operator precedence is defined in the appropriate standard. The standards for C and C++ are the One True Definition of what exactly C and C++ are. So if you look closely, the details are there. In fact, the details are in the grammar of the language. For example, take a look at the grammar production … Read more

Are functions calls in a constructor’s initializer-list sequenced?

So I am wondering if it is guaranteed that t.a == 0 and t.b == 1? This will always be true so long as a comes before b in the class declaration and nothing else calls f() between the initialization of a and b. Class members are initialized in the order they are declared in … Read more