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How do I create a nice-looking DMG for Mac OS X using command-line tools?
...unts the copy.
It replaces all files with the most up to date ones (e.g. latest app after build). You can simply use mv or ditto for that on command line. Note, when you replace a file like that, the icon will stay the same, the position will stay the same, everything but the file (or directory) con...
javascript function leading bang ! syntax
...execute it. But that will not work due to specifics of JS grammar.
So shortest form of achieving this is to use some expression e.g. UnaryExpression (and so CallExpression):
!function(){
// do stuff
}();
Or for the fun:
-function(){
// do stuff
}();
Or:
+function(){
// do stuff
}()...
Difference between del, remove and pop on lists
...
@rite2hhh it tests for equality. Equality tests test for identity first as an optimisation
– Martijn Pieters♦
Dec 26 '19 at 20:33
...
Double negation (!!) in javascript - what is the purpose? [duplicate]
...oolean value, true or false.
Most are familiar with using truthiness as a test:
if (options.guess) {
// runs if options.guess is truthy,
}
But that does not necessarily mean:
options.guess===true // could be, could be not
If you need to force a "truthy" value to a true boolean value, !...
Check cell for a specific letter or set of letters
...ther a number ("found", so YES preferred) or #VALUE! we can use ISERROR to test for #VALUE! within an IF formula, for instance taking the first example above:
=if(iserror(FIND("bla",A1)),"NO","YES")
Longer than the regexmatch but the components are easily adjustable.
...
What is the Difference Between read() and recv() , and Between send() and write()?
...reverse problem if 13-10 are consecutive in the binary data, but I haven't tested it. But that appears to be another possible difference between send() and write().
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java.util.regex - importance of Pattern.compile()?
...ormance benefit can be quite significant.
I did a quick benchmark:
@Test
public void recompile() {
var before = Instant.now();
for (int i = 0; i < 1_000_000; i++) {
Pattern.compile("ab").matcher("abcde").matches();
}
System.out.println("recom...
Python : List of dict, if exists increment a dict value, if not append a new dict
...urls)
If you really need to do it the way you showed, the easiest and fastest way would be to use any one of these three examples, and then build the one you need.
from collections import defaultdict # available in Python 2.5 and newer
urls_d = defaultdict(int)
for url in list_of_urls:
urls...
What's the difference between window.location= and window.location.replace()?
...
what is the value of mystring? does anyone really know without doing some test. No one knows what exactly will happen here. Hell I just wrote this and I don't even know what it does. location is an object but I am assigning a string will it pass the string or pass the location object. Lets say ther...
How can I convert an RGB image into grayscale in Python?
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Three of the suggested methods were tested for speed with 1000 RGBA PNG images (224 x 256 pixels) running with Python 3.5 on Ubuntu 16.04 LTS (Xeon E5 2670 with SSD).
Average run times
pil : 1.037 seconds
scipy: 1.040 seconds
sk : 2.120 seconds
PIL and ...