Really, you just compare the string to whatever you expect to accept as representing true, so you can do this: Or to checks against a whole bunch of values: Be cautious when using the following: Empty strings evaluate to False, but everything else evaluates to True. So this should not be used for any kind of parsing … Read more
You can’t. I think you have FOUR options here. All four offer a solution but with a slightly different approach… Option One: use the built-in name() on an enum. This is perfectly fine if you don’t need any special naming format. Option Two: add overriding properties to your enums if you want more control Option Three: use static finals instead … Read more
Gcc 7.1 -O3 these are all identical, godbolt.org/z/a-hc1d – jterm Apr 25 at 3:27 Original answer: Did some digging. Below is an example program and the relevant assembly: Code: Assembly: This was compiled with -std=c++11 -O2. You can see that there is quite a lot more work for the return “”; statement and comparably little for return std::string and return {}; (these … Read more
Use strtotime() on your first date then date(‘Y-m-d’) to convert it back: Make note that there is a difference between using forward slash / and hyphen – in the strtotime() function. To quote from php.net: Dates in the m/d/y or d-m-y formats are disambiguated by looking at the separator between the various components: if the separator is a slash (/), then the American m/d/y is … Read more
Something like this?
I have a shell script with this code: But the conditional code always executes, because hg st always prints at least one newline character. Is there a simple way to strip whitespace from $var (like trim() in PHP)? or Is there a standard way of dealing with this issue? I could use sed or AWK, but I’d like to think there is a more elegant … Read more
To match regexes you need to use the =~ operator. Try this: Alternatively, you can use wildcards (instead of regexes) with the == operator: If portability is not a concern, I recommend using [[ instead of [ or test as it is safer and more powerful. See What is the difference between test, [ and [[ ? for details.
You are mixing c++ and c I/O. In C++ this is,
You are reading an index slowo.size() in slowo, but subscripting it 0-based, so slowo can only be indexed from 0 to slowo.size()-1. You need to change your condition to