Prost! 🍻
C) It's an obvious joke.
s/diplomated/graduate/
s/branche/industry (sector)/
Because let x: y
is syntactically unambiguous, but you need to know that y
names a type in order to correctly parse y x
. (Or at least that's the case in C where a(b)
may be a variable declaration or a function call depending on what typedefs are in scope.)
POV: You open vim for the first time.
The same is true of std::endl. std::endl is simply defined as << '\n' << std::flush
; nothing more, nothing less. In all cases where endl gives you a "properly translated" newline, so does \n
.
std::endl provides zero portability benefits. C++ does have a portable newline abstraction, but it is called \n
, not endl.
Arguably, I never fully learned Bash syntax, but it also is just a stupid if-statement. There shouldn’t be that much complexity in it.
There isn't. The syntax is
if COMMANDthenCOMMAND(s)...elseCOMMAND(s)...fi
I believe, if you write the then onto the next line, then you don’t need the semicolon.
Yes, but that's true of all commands.
foo; bar; baz
is the same as
foobarbaz
All the ]
and -z
stuff has nothing to do with if
. In your example, the command you're running is literally called [
. You're passing it three arguments: -z
, "$var"
, and ]
. The ]
argument is technically pointless but included for aesthetic reasons to match the opening ]
(if you wanted to, you could also write test -z "$var"
because [
is just another name for the test
command).
Since you can logically negate the exit status of every command (technically, every pipeline) by prefixing a !
, you could also write this as:
if ! test "$var"; then ...
The default mode of test
(if given one argument) is to check whether it is non-empty.
Now, if you don't want to deal with the vagaries of the test
command and do a "native" string check, that would be:
case "$var" in "") echo "empty";; *) echo "not empty";;esac
Strictly speaking, it should be
Unsafe block syntax in C++
{ ...}
barubary
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@devilish666 C++ (non-stupid):
#include <stdio.h>
int main() {
puts("Hello, world!");
}