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Useful code which uses reduce()? [closed]
...The other uses I've found for it besides + and * were with and and or, but now we have any and all to replace those cases.
foldl and foldr do come up in Scheme a lot...
Here's some cute usages:
Flatten a list
Goal: turn [[1, 2, 3], [4, 5], [6, 7, 8]] into [1, 2, 3, 4, 5, 6, 7, 8].
reduce(list...
jQuery removing '-' character from string
...el.text().replace('-', '');
if you have done it that way variable string now holds "123456"
you can also (i guess the better way) do this...
$mylabel.text("-123456");
$mylabel.text(function(i,v){
return v.replace('-','');
});
...
Sorting an array of objects by property values
... = key(a), b = key(b), reverse * ((a > b) - (b > a));
}
}
//Now you can sort by any field at will...
const homes=[{h_id:"3",city:"Dallas",state:"TX",zip:"75201",price:"162500"},{h_id:"4",city:"Bevery Hills",state:"CA",zip:"90210",price:"319250"},{h_id:"5",city:"New York",state:"NY"...
How to use a keypress event in AngularJS?
... ng-click.
for instance:
<a ng-click="action()">action</a>
Now, let's add keyboard support.
trigger by enter key:
<a ng-click="action()"
ng-keydown="$event.keyCode === 13 && action()">action</a>
by space key:
<a ng-click="action()"
ng-keydown="$eve...
How can I join elements of an array in Bash?
...when the delimiter starts with a hyphen (and maybe others I can't think of now). You can of course fix these (replace backslashes by double backslashes and use printf -- "$d%s"), but at some point you'll feel that you're fighting against the shell instead of working with it. That's why, in my answer...
Secure hash and salt for PHP passwords
...that MD5 is partially unsafe. Taking this into consideration, I'd like to know which mechanism to use for password protection.
...
C# generic list how to get the type of T? [duplicate]
I'm working on a reflection project, and now I'm stuck.
4 Answers
4
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Can I target all tags with a single selector?
I'd like to target all h tags on a page. I know you can do it this way...
10 Answers
1...
Concatenating null strings in Java [duplicate]
...ng Conversion", requires this operation to succeed without failure:
...Now only reference values need to be considered. If the reference is null, it is converted to the string "null" (four ASCII characters n, u, l, l). Otherwise, the conversion is performed as if by an invocation of the toString...
What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?
... let i = new mongoose.Types.ObjectId(userId.id); console.log("now here"); // this console not even printing
– yogesh agrawal
Jan 22 '18 at 15:42
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