if-statement
How to check if a number is within a range in shell
If you are using Bash, you are better off using the arithmetic expression, ((…)) for readability and flexibility: if ((number >= 2 && number <= 5)); then # your code fi To read in a loop until a valid number is entered: #!/bin/bash while :; do read -p “Enter a number between 2 and 5: … Read more
What do compilers do with compile-time branching?
TL;DR There are several ways to get different run-time behavior dependent on a template parameter. Performance is usually equal, so flexibility and maintainability are the main concern. In all cases, the various thin wrappers and constant conditional expressions will all be optimized away on any decent compiler for release builds. Below a small summary with … Read more
How to have multiple conditions for one if statement in python [duplicate]
I would use def example(arg1, arg2, arg3): if arg1 == 1 and arg2 == 2 and arg3 == 3: print(“Example Text”) The and operator is identical to the logic gate with the same name; it will return 1 if and only if all of the inputs are 1. You can also use or operator if … Read more
‘else’ is not recognized as an internal or external command, operable program or batch file
The else needs to be on the same “line” (a) as the if. Remove the new-line before the else like so: if “zz”==”TRUE” ( copy /a zz + /a ee=/a zz ) else ( copy /a e + /a %TMP%=/a e ) Please also note that “zz”==”TRUE” will never evaluate to true – I suspect … Read more
Should I throw exceptions in an if-else block?
It makes no sense to throw an exception in a try block and immediately catch it, unless the catch block throws a different exception. Your code would make more sense this way: public Response getABC(Request request) { Response res = new Response(); if (request.someProperty == 1) { // business logic } else { res.setMessage(“xxxx”); } … Read more
How can I port C++ code that uses the ternary operator to Rust?
Rust does not have the ternary operator because it’s not needed. Almost everything evaluates to some value, and if / else expressions are no exception: let r = 42.42; let sgn_r = if r >= 0. { 1. } else { -1. }; You’ll note that I’ve also changed your variable names to be idiomatic … Read more
Why Java does not see that Integers are equal?
Check out this article: Boxed values and equality When comparing wrapper types such as Integers, Longs or Booleans using == or !=, you’re comparing them as references, not as values. If two variables point at different objects, they will not == each other, even if the objects represent the same value. Example: Comparing different Integer … Read more
Syntax for an If statement using a boolean
You can change the value of a bool all you want. As for an if: if randombool == True: works, but you can also use: if randombool: If you want to test whether something is false you can use: if randombool == False but you can also use: if not randombool:
Single line if statement with 2 actions
Sounds like you really want a Dictionary<int, string> or possibly a switch statement… You can do it with the conditional operator though: userType = user.Type == 0 ? “Admin” : user.Type == 1 ? “User” : user.Type == 2 ? “Employee” : “The default you didn’t specify”; While you could put that in one line, … Read more