大约有 6,886 项符合查询结果（耗时：0.0308秒） [XML]
How to get the nth occurrence in a string?
... "XYZ 123 ABC 456 ABC 789 ABC";
function getPosition(string, subString, index) {
return string.split(subString, index).join(subString).length;
}
console.log(
getPosition(string, 'ABC', 2) // --> 16
)
s...
In Python, how do I index a list with another list?
I would like to index a list with another list like this
7 Answers
7
...
How to make Git “forget” about a file that was tracked but is now in .gitignore?
...ady being tracked.
To stop tracking a file you need to remove it from the index. This can be achieved with this command.
git rm --cached <file>
If you want to remove a whole folder, you need to remove all files in it recursively.
git rm -r --cached <folder>
The removal of the file...
What are the differences between segment trees, interval trees, binary indexed trees and range trees
What are differences between segment trees, interval trees, binary indexed trees and range trees in terms of:
2 Answers
...
CSS z-index paradox flower
I would like to create a paradoxical effect via the z-index CSS property.
6 Answers
...
Iteration ng-repeat only X times in AngularJs
...nd I could think of.
<span ng-repeat="n in [].constructor(5) track by $index">
{{$index}}
</span>
Here's a Plunker example.
share
|
improve this answer
|
follo...
How do Python functions handle the types of the parameters that you pass in?
...nd the type of the return type of a function like this:
def pick(l: list, index: int) -> int:
return l[index]
We can here see that pick takes 2 parameters, a list l and an integer index. It should also return an integer.
So here it is implied that l is a list of integers which we can see ...
Fastest way to flatten / un-flatten nested JSON objects
...gex runs remarkably well (especially in Chrome), I tried replacing it with indexOf logic, but was only able to realize a speed-up in FF. I'll be adding a bounty to this question to see if another clever improvement can be stirred up, but so far this is more than what I was hoping for.
...
SQLite add Primary Key
...It's weird that you can't add a PK after table creation but you can add an index (CREATE UNIQUE INDEX pkName ON tableName(columnName)) when DB frameworks like MS SQL's SMO actually make you add a PK after the table has been created!
– SteveCinq
Aug 31 '17 at 18...
Traverse a list in reverse order in Python
...versed(a):
... print(i)
...
baz
bar
foo
To also access the original index, use enumerate() on your list before passing it to reversed():
>>> for i, e in reversed(list(enumerate(a))):
... print(i, e)
...
2 baz
1 bar
0 foo
Since enumerate() returns a generator and generators ca...