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How do I empty an array in JavaScript?
...0,A.length)
Using .splice() will work perfectly, but since the .splice() function will return an array with all the removed items, it will actually return a copy of the original array. Benchmarks suggest that this has no effect on performance whatsoever.
Method 4 (as suggested by tanguy_k)
while...
Check if a Windows service exists and delete in PowerShell
...
123
There's no harm in using the right tool for the job, I find running (from Powershell)
sc.exe ...
Which terminal command to get just IP address and nothing else?
...ou know the interface, you could use:
~$ ipconfig getifaddr en0
192.168.1.123
which will return just the IP address.
Or you could loop over possible interface names, starting with a suffix, i.e. en:
for NUMBER in $(seq 0 5); do
ip=`ipconfig getifaddr en$NUMBER`
if [ -n "$ip" ]; then
...
Remove a symlink to a directory
...
123
ah yes. that makes sense. I never typed foo, I typed f<tab> and bash filled in a / for me.
– Matthew Scouten
...
How do I concatenate multiple C++ strings on one line?
...tring s = string("abc").append("def").append(otherStrVar).append(to_string(123));
– Patricio Rossi
Nov 12 '17 at 2:46
1
...
How do I dynamically assign properties to an object in TypeScript?
.../ the following is an error,
// so you haven't lost type safety
foo.bar = 123;
Alternatively you can mark these properties as optional:
interface IFoo{
bar?:string;
baz?:string;
boo?:string;
}
// Now your simple initialization works
var foo:IFoo = {};
Try it online
...
#pragma pack effect
...sistency of stored data between different compiler targets. I had a lot of fun with this transitioning from 16 bit to 32 bit code; I expect porting to 64 bit code will cause the same kinds of headaches for some code.
shar...
Inspect hovered element in Chrome?
...-script-execution which helped me:
In the console:, Run:
const F12 = 123
window.addEventListener('keydown', function(event) {
if (event.keyCode === F12 ) {
debugger;
}
});
Highlight element with inspector
Hit F12
You can now inspect the element, with JavaScri...
Can Python test the membership of multiple values in a list?
...peed boost is due to Python's fast c-backed implementation of set, but the fundamental algorithm is the same in both cases.
If your items are already stored in a list for other reasons, then you'll have to convert them to a set before using the subset test approach. Then the speedup drops to about ...
Cookie overflow in rails application?
... :mem_cache_store, 'localhost', '127.0.0.1:11211',
{:namespace => 'myapp123'}
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