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JavaScript style for optional callbacks
...tions
( rest
, combs =>
callback (combs .concat (combs .map (c => [ x, ...c ])))
)
console.log (combinations (['A', 'B', 'C']))
// [ []
// , [ 'C' ]
// , [ 'B' ]
// , [ 'B', 'C' ]
// , [ 'A' ]
// , [ 'A', 'C' ]
// , [ 'A', 'B' ]
// , [ 'A', 'B...
\d is less efficient than [0-9]
...id it was probably more efficient to use a range or digit specifier than a character set.
5 Answers
...
What's the difference between a word and byte?
...s “Addressable unit of data large enough to hold any member of the basic character set of the execution environment.”
What this means is that the byte consists of at least enough adjacent bits to accommodate the basic character set for the implementation. That is, the number of possible values ...
How do I read / convert an InputStream into a String in Java?
...ing (Apache Utils)
String result = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
Using CharStreams (Guava)
String result = CharStreams.toString(new InputStreamReader(
inputStream, Charsets.UTF_8));
Using Scanner (JDK)
Scanner s = new Scanner(inputStream).useDelimiter("\\A");
S...
Why does sizeof(x++) not increment x?
...at is initialized as a quoted string, instead of using strlen(), where the character array comprising the string has to be scanned for the null-terminator at run time, sizeof(quoted_string) is known at compile time, and therefore at run-time. It's a small thing, but if you use the quoted string in a...
“:” (colon) in C struct - what does it mean? [duplicate]
... struct
{
short a : 4;
short b : 3;
} test2;
struct
{
char a : 4;
char b : 3;
} test3;
struct
{
char a : 4;
short b : 3;
} test4;
printf("test1: %d\ntest2: %d\ntest3: %d\ntest4: %d\n", sizeof(test1), sizeof(test2), sizeof(test3), sizeof(test4));
test...
What is the argument for printf that formats a long?
... Yep Dr Beco; further, just %l triggers warning: unknown conversion type character 0x20 in format [-Wformat]
– Patrizio Bertoni
Jul 29 '15 at 10:53
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...
How to insert newline in string literal?
... = string.Format("first line{0}second line", Environment.NewLine);
String concatenation:
string x = "first line" + Environment.NewLine + "second line";
String interpolation (in C#6 and above):
string x = $"first line{Environment.NewLine}second line";
You could also use \n everywhere, and repl...
javascript function leading bang ! syntax
...= 2 statement isn't terminated due to the following parenthesis.
Also in concatenated javascript files you don't have to worry if the preceding code has missing semicolons. So no need for the common ;(function(){})(); to make sure your own won't break.
I know my answer is kind of late but i think...
How many characters can a Java String have?
...ss uses for internal storage)
OR
Half your maximum heap size (since each character is two bytes) whichever is smaller.
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