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Get loop count inside a Python FOR loop
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edited Jun 21 '18 at 5:09
answered Jul 1 '10 at 23:02
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Insert a line at specific line number with sed or awk
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edited Nov 9 '14 at 0:18
answered Jun 30 '11 at 15:54
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Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are
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130
From Java SE 8 onwards, users are asked to migrate to java.time (JSR-310). There are efforts o...
Using multiple let-as within a if-statement in Swift
...atitudeDouble is non-optional in here and importantThing is true
}
Swift 1.2:
Apple may have read your question, because your hoped-for code compiles properly in Swift 1.2 (in beta today):
if let latitudeDouble = latitude as? Double, longitudeDouble = longitude as? Double {
// do stuff here
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swift case falling through
...= "hello"
var result = 0
switch testVal {
case "one", "two":
result = 1
default:
result = 3
}
Alternatively, you can use the fallthrough keyword:
var testVal = "hello"
var result = 0
switch testVal {
case "one":
fallthrough
case "two":
result = 1
default:
result = 3
}
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How do I write data into CSV format as string (not file)?
I want to cast data like [1,2,'a','He said "what do you mean?"'] to a CSV-formatted string.
6 Answers
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Get the first N elements of an array?
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edited Oct 13 '14 at 16:22
mandza
31877 silver badges2323 bronze badges
answered Sep 15 '...
What does the exclamation mark mean in a Haskell declaration?
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319
It's a strictness declaration. Basically, it means that it must be evaluated to what's called "...
What's the (hidden) cost of Scala's lazy val?
...$0;
private String msg;
public String msg() {
if ((bitmap$0 & 1) == 0) {
synchronized (this) {
if ((bitmap$0 & 1) == 0) {
synchronized (this) {
msg = "Lazy";
}
}
bitmap$0 = bitmap$0 | 1;
...