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Declare slice or make slice?
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In addition to fabriziom's answer, you can see more examples at "Go Slices: usage and internals", where a use for []int is mentioned:
Since the zero value of a slice (nil) acts like a zero-length slice, you can declare a slice variable and then append to it in a loop:
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What is “:-!!” in C code?
...o fail the build.
The macro is somewhat misnamed; it should be something more like BUILD_BUG_OR_ZERO, rather than ...ON_ZERO. (There have been occasional discussions about whether this is a confusing name.)
You should read the expression like this:
sizeof(struct { int: -!!(e); }))
(e): Compute...
How do I parse command line arguments in Bash?
...;
*) # unknown option
POSITIONAL+=("$1") # save it in an array for later
shift # past argument
;;
esac
done
set -- "${POSITIONAL[@]}" # restore positional parameters
echo "FILE EXTENSION = ${EXTENSION}"
echo "SEARCH PATH = ${SEARCHPATH}"
echo "LIBRARY PATH = ${LIBPATH}"
e...
Detect encoding and make everything UTF-8
...e encoding of your strings is. It can be Latin1 (ISO 8859-1), Windows-1252 or UTF-8, or the string can have a mix of them. Encoding::toUTF8() will convert everything to UTF-8.
I did it because a service was giving me a feed of data all messed up, mixing UTF-8 and Latin1 in the same string.
Usage:
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How can you use an object's property in a double-quoted string?
...ngle quotes:
$foo = 2
'$foo'
However, if you want to access properties, or use indexes on variables in a double-quoted string, you have to enclose that subexpression in $():
$foo = 1,2,3
"$foo[1]" # yields "1 2 3[1]"
"$($foo[1])" # yields "2"
$bar = "abc"
"$bar.Length" # yields "abc.Len...
Asking the user for input until they give a valid response
...put
age = int(input("Please enter your age: "))
except ValueError:
print("Sorry, I didn't understand that.")
#better try again... Return to the start of the loop
continue
else:
#age was successfully parsed!
#we're ready to exit the loop.
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How do you convert epoch time in C#?
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To get this to work correctly I had to change .AddSeconds to .AddMilliseconds. You will need to know whether your number is coming from Seconds or Milliseconds in order to get the correct result. So for instance the following date: 140631...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...mpiler Collection) piece by piece, using the current version,
using the correct versions of dependencies, not using a package manager (like yum, rpm, apt, dpkg), and not using shared libraries?
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Accessing an array out of bounds gives no error, why?
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Welcome to every C/C++ programmer's bestest friend: Undefined Behavior.
There is a lot that is not specified by the language standard, for a variety of reasons. This is one of them.
In general, whenever you encounter undefined behavior, anything might happen. The application may crash, it ...
Including jars in classpath on commandline (javac or apt)
...avac I am having the same issue). I think what I am getting is compile errors. (Shown at bottom).
6 Answers
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