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How do you access the matched groups in a JavaScript regular expression?
...e easily transformed into an Array by using the spread syntax or the Array.from method:
function getFirstGroup(regexp, str) {
const array = [...str.matchAll(regexp)];
return array.map(m => m[1]);
}
// or:
function getFirstGroup(regexp, str) {
return Array.from(str.matchAll(regexp), m =>...
What is the purpose of Android's tag in XML layouts?
...purpose themselves.
For example, if you were to <include/> a layout from another file without using merge, the two files might look something like this:
layout1.xml:
<FrameLayout>
<include layout="@layout/layout2"/>
</FrameLayout>
layout2.xml:
<FrameLayout>
...
Check play state of AVPlayer
...gBlock: or addBoundaryTimeObserverForTimes:queue:usingBlock:.
Example is from Apple:
// Assume a property: @property (retain) id playerObserver;
Float64 durationSeconds = CMTimeGetSeconds([<#An asset#> duration]);
CMTime firstThird = CMTimeMakeWithSeconds(durationSeconds/3.0, 1);
CMTime se...
How many bits or bytes are there in a character? [closed]
... of Windows internally run with 2-byte characters (UCS-2 up to NT4, UTF-16 from Windows 2000 onwards, stored as wchar_t), not only Asian ones, and so should do all the newer applications. (On Linux, instead, it's a completely different story since usually UTF-8 is used throughout the whole system)
...
How to use regex with find command?
...-regex find expression matches the whole name, including the relative path from the current directory. For find . this always starts with ./, then any directories.
Also, these are emacs regular expressions, which have other escaping rules than the usual egrep regular expressions.
If these are all ...
Passing variables in remote ssh command
I want to be able to run a command from my machine using ssh and pass through the environment variable $BUILD_NUMBER
7 Ans...
Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
...ry&.name
NoMethodError: undefined method `name' for "Australia":String
from (pry):38:in `<main>'
> params.try(:country).try(:name)
nil
It is also including a similar sort of way: Array#dig and Hash#dig. So now this
city = params.fetch(:[], :country).try(:[], :state).try(:[], :city)
...
How to sum up elements of a C++ vector?
...
I wanted to fix the typo from "accumuate" to "accumulate" by "edit", but was told by stackoverflow that "Edits must be at least 6 characters".
– aafulei
Jun 29 at 9:59
...
What's the best way to check if a String represents an integer in Java?
...
I would use this method or the original method from the question before regex. This for performance, the original method for speed of implementation and sheer maintainability. The regex solution has nothing going for it.
– Bill the Lizard
...
Should I prefer pointers or references in member data?
...a that it would catch, and occasionally I appreciate the flexibility I get from code that consistently uses pointer members (smart pointers where appropriate).
– James Hopkin
May 21 '09 at 14:22
...