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Why the switch statement cannot be applied on strings?
...cpp/cpp_mfc/article.php/c4067/Switch-on-Strings-in-C.htm
Uses two maps to convert between the strings and the class enum (better than plain enum because its values are scoped inside it, and reverse lookup for nice error messages).
The use of static in the codeguru code is possible with compiler su...
How do you get a timestamp in JavaScript?
... the timestamp in milliseconds:
new Date().getTime()
Which you can then convert to seconds like this:
Math.round(new Date().getTime()/1000)
And you can also use the valueOf method which we showed above:
new Date().valueOf()
Timestamp in Milliseconds
var timeStampInMs = window.performan...
How to negate a method reference predicate
...ows how by explicitly casting the method reference to a Predicate and then converting it using the negate function. That is one way among a few other not too troublesome ways to do it.
The opposite of this:
Stream<String> s = ...;
int emptyStrings = s.filter(String::isEmpty).count();
is th...
Natural Sort Order in C#
...+
"bjEyKsKtbjEzKsSwKg==";
string[] fileNames = Encoding.UTF8.GetString(Convert.FromBase64String(encodedFileNames))
.Replace("*", ".txt?").Split(new[] { "?" }, StringSplitOptions.RemoveEmptyEntries)
.Select(n => expand(n)).ToArray();
...
Format a datetime into a string with milliseconds
...
agree with @cabbi, there's no need to convert back and forth with string and int
– caoanan
May 21 '18 at 3:15
...
Fastest sort of fixed length 6 int array
...n's SWAP macro. Update: I switched to Paolo Bonzini's SWAP macro which gcc converts into something similar to Gunderson's, but gcc is able to better order the instructions since they aren't given as explicit assembly.
I used the same swap order as the reordered swap network given as the best perfor...
How to Sort a List by a property in the object
...and should be much more efficient than creating a new IEnumerable and then converting it to a new list.
– Jonathan Wood
Dec 30 '15 at 17:11
51
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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...
A lambda expression can either be converted to a delegate type or an expression tree - but it has to know which delegate type. Just knowing the signature isn't enough. For instance, suppose I have:
public delegate void Action1();
public delegate void Action2...
What's the best way to get the last element of an array without deleting it?
...st a day, so if I need to do it again I will probably write something that converts the output of all 210 docker executions to a table automatically :-)
– Paul van Leeuwen
Sep 29 '18 at 20:07
...
What is the difference between NULL, '\0' and 0?
...ion of this type, cast to type void * is a null pointer constant, which if converted to a pointer becomes a null pointer. It is guaranteed by the standard to compare unequal to any pointer to any object or function.
NULL is a macro, defined in as a null pointer constant.
\0 is a construction used...