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What is the difference between a weak reference and an unowned reference?
...old on the referred object (a.k.a. they don't increase the retain count in order to prevent ARC from deallocating the referred object).
But why two keywords? This distinction has to do with the fact that Optional types are built-in the Swift language. Long story short about them: optional types offe...
How to profile methods in Scala?
...you can automatically wrap things in the REPL
– oxbow_lakes
Feb 6 '12 at 12:43
1
Almost perfect, ...
Forward declaration of nested types/classes in C++
...:Nested; // But this doesn't work.
My workaround was:
class IDontControl_Nested; // Forward reference to distinct name.
Later when I could use the full definition:
#include <idontcontrol.h>
// I defined the forward ref like this:
class IDontControl_Nested : public IDontControl::Nested
{...
How to convert byte array to string and vice versa?
...rset): String str = new String(bytes, java.nio.charset.StandardCharsets.ISO_8859_1);
– iman
Nov 20 '17 at 7:33
...
Is there a way of making strings file-path safe in c#?
...h.GetInvalidFileNameChars();
// Builds a string out of valid chars and an _ for invalid ones
var validFilename = new string(filename.Select(ch => invalidFileNameChars.Contains(ch) ? '_' : ch).ToArray());
To replace invalid characters (and avoid potential name conflict like Hell* vs Hell$):
st...
Haml: Control whitespace around text
...
To answer the original question:
I will first
= succeed ',' do
= link_to 'link somewhere', 'http://example.com'
- if @condition
then render this half of the sentence if a condition is met
Produces:
I will first
<a href="http://example.com">link somewhere</a>,
then render this ...
What is the global interpreter lock (GIL) in CPython?
...ntly as possible. If you have a "global lock" which you need to acquire in order to (say) call a function, that can end up as a bottleneck. You can wind up not getting much benefit from having multiple threads in the first place.
To put it into a real world analogy: imagine 100 developers working a...
UIButton Long Press Event
...s = UILongPressGestureRecognizer(target: self, action: #selector(longPress(_:)))
self.button.addGestureRecognizer(longPress)
}
func longPress(gesture: UILongPressGestureRecognizer) {
if gesture.state == UIGestureRecognizerState.began {
print("Long Press"...
Find a Git branch containing changes to a given file
...ranch --contains $f; done | sort -u
Manually inspect:
gitk --all --date-order -- $FILENAME
Find all changes to FILENAME not merged to master:
git for-each-ref --format="%(refname:short)" refs/heads | grep -v master | while read br; do git cherry master $br | while read x h; do if [ "`git log -...
What is a MIME type?
...en to write your first letter in Tamil, and the second in German etc.
In order for your friend to translate those letters, your friend would need to:
(i) identify the language type, and
(ii) and then translate it accordingly.
But identifying a language is not that easy - it's going to take a l...