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How to find index of list item in Swift?
I am trying to find an item index by searching a list . Does anybody know how to do that?
22 Answers
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typecast string to integer - Postgres
...ing into an integer.
Solution
Create a user-defined function inspired by PHP's intval() function.
CREATE FUNCTION intval(character varying) RETURNS integer AS $$
SELECT
CASE
WHEN length(btrim(regexp_replace($1, '[^0-9]', '','g')))>0 THEN btrim(regexp_replace($1, '[^0-9]', '','g'))::intege...
Elastic search, multiple indexes vs one index and types for different data sets?
I have an application developed using the MVC pattern and I would like to index now multiple models of it, this means each model has a different data structure.
...
Combining two Series into a DataFrame in pandas
...olumns (otherwise it simply numbers them):
In [1]: s1 = pd.Series([1, 2], index=['A', 'B'], name='s1')
In [2]: s2 = pd.Series([3, 4], index=['A', 'B'], name='s2')
In [3]: pd.concat([s1, s2], axis=1)
Out[3]:
s1 s2
A 1 3
B 2 4
In [4]: pd.concat([s1, s2], axis=1).reset_index()
Out[4]:
...
Return positions of a regex match() in Javascript?
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exec returns an object with a index property:
var match = /bar/.exec("foobar");
if (match) {
console.log("match found at " + match.index);
}
And for multiple matches:
var re = /bar/g,
str = "foobarfoobar";
while ((match = re....
Replacing a char at a given index in string? [duplicate]
...
Use a StringBuilder:
StringBuilder sb = new StringBuilder(theString);
sb[index] = newChar;
theString = sb.ToString();
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Minimum and maximum value of z-index?
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http://www.w3.org/TR/CSS21/visuren.html#z-index
'z-index'
Value: auto | <integer> | inherit
http://www.w3.org/TR/CSS21/syndata.html#numbers
Some value types may have integer
values (denoted by <integer>) or
real number values (deno...
How to replace list item in best way
...
Use Lambda to find the index in the List and use this index to replace the list item.
List<string> listOfStrings = new List<string> {"abc", "123", "ghi"};
listOfStrings[listOfStrings.FindIndex(ind=>ind.Equals("123"))] = "def";
...
Move an array element from one array position to another
... fairly good success with this function:
function array_move(arr, old_index, new_index) {
if (new_index >= arr.length) {
var k = new_index - arr.length + 1;
while (k--) {
arr.push(undefined);
}
}
arr.splice(new_index, 0, arr.splice(old_i...
C++ sorting and keeping track of indexes
...ce of samples in ascending order, but I also want to remember the original indexes of the new samples.
15 Answers
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