"unary operator expected" error in Bash if condition
May 14, 2021 · I had to solve this unary operator expected issue in remove_old_pkgs() of the helper script abk for Arch Sign Modules. See also 6.4 Bash Conditional Expressions Share
c# - What does the unary plus operator do? - Stack Overflow
Feb 22, 2018 · One thing the built-in unary + does is turning lvalue into an rvalue. For example, you can do this. int x; &x; but you can't do this &+x; :) P.S. "Overloading" is definitely not the …
What's the significant use of unary plus and minus operators?
Jan 26, 2016 · The Unary -operator converts its operand to Number type, and then negates it. (per the ECMAScript spec) In practice, Unary -is used for simply putting negative numbers in …
bash - [: -gt: unary operator expected - Stack Overflow
Jul 25, 2014 · I don't write a lot of Bash, so I'm a bit stumped as to how to fix this. I need to check whether a value returned from a command is greater than x. When it runs though I get [: -gt: …
What is the purpose of the unary plus (+) operator in C?
Jul 10, 2011 · The result of the unary + operator is the value of its (promoted) operand. The integer promotions are performed on the operand, and the result has the promoted type. …
What's the purpose of the + (pos) unary operator in Python?
May 29, 2013 · For symmetry, because unary minus is an operator, unary plus must be too. In most arithmetic situations, it doesn't do anything, but keep in mind that users can define …
What is unary + used for in Javascript? - Stack Overflow
Mar 29, 2012 · The unary + operator, when used on types other than string, will internally attempt to call valueOf() or toString() (in that order) and then attempt to convert the result to a number. …
Is a unary/recursive relationship strong/identifying or weak/non ...
Unary/recursive relationship: Most relationships are binary, in that they connect two separate entities. For example, the relationships between Course and Class, and between Room and …
error: invalid type argument of ‘unary *’ (have ‘int’)
Mar 28, 2011 · cout << **p; //error: invalid type argument of `unary *' //peeking too deeply into p, you better believe that's a paddlin. ELI5: The master puts a shiny round stone inside a small …
bash - “unary operator expected” in shell script - Stack Overflow
Mar 4, 2014 · I need a script to keep polling "receive_dir" directory till "stopfile" get written in the directory. This has to run despite empty directory. So far i have this but fails if receive_dir is …