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Java SafeVarargs annotation, does a standard or best practice exist?
...a simple "re-writing" at compile-time: a varargs parameter of type X... is converted into a parameter of type X[]; and every time a call is made to this varargs method, the compiler collects all of the "variable arguments" that goes in the varargs parameter, and creates an array just like new X[] { ...
How do I generate random numbers in Dart?
How do I generate random numbers using Dart?
13 Answers
13
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General suggestions for debugging in R
...on(y) warning("don't want to use 'y'!")
> foo(1)
Error in bar(x + 2) : (converted from warning) don't want to use 'y'!
> traceback()
7: doWithOneRestart(return(expr), restart)
6: withOneRestart(expr, restarts[[1L]])
5: withRestarts({
.Internal(.signalCondition(simpleWarning(msg, call), ...
Transferring ownership of an iPhone app on the app store
... This answer should be downvoted. It seems that the guy just converted his indie account to a business account, which obviously will keep all your app reviews and updates.
– samvermette
Oct 30 '12 at 21:53
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How to implement a queue using two stacks?
Suppose we have two stacks and no other temporary variable.
20 Answers
20
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Using awk to remove the Byte-order mark
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In addition to converting CRLF line endings to LF, dos2unix also removes BOMs:
dos2unix *.txt
dos2unix also converts UTF-16 files with a BOM (but not UTF-16 files without a BOM) to UTF-8 without a BOM:
$ printf '\ufeffä\n'|iconv -f utf...
How can I read a function's signature including default argument values?
... in C, hence the TypeError. You'll have to check the source code to understand the call signature. In Python3, getargspec is implemented differently, and there inspect.getargspec(Exception.__init__) returns a ArgSpec instance.
– unutbu
Aug 4 '18 at 1:10
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Apache POI Excel - how to configure columns to be expanded?
... Just wanted to point out that autoSizeColumn does not scale well and will be super slow if you have lots of rows. I had to get a little hacky and do something similar to what was suggested in this question.
– lbstr
Apr 17 '14 at 20:17
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Paging UICollectionView by cells, not screen
I have UICollectionView with horizontal scrolling and there are always 2 cells side-by-side per the entire screen. I need the scrolling to stop at the begining of a cell. With paging enabled, the collection view scrolls the whole page, which is 2 cells at once, and then it stops.
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Obtaining a powerset of a set in Java
...2^n possible combinations. Here's a working implementation, using generics and sets:
public static <T> Set<Set<T>> powerSet(Set<T> originalSet) {
Set<Set<T>> sets = new HashSet<Set<T>>();
if (originalSet.isEmpty()) {
sets.add(new HashS...