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How to get the nth occurrence in a string?
...
const 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
)
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Flask-SQLAlchemy how to delete all rows in a single table
...e query.
ex.
#for specific value
db.session.query(Model).filter(Model.id==123).delete()
db.session.commit()
Delete Single Record by Object
record_obj = db.session.query(Model).filter(Model.id==123).first()
db.session.delete(record_obj)
db.session.commit()
https://flask-sqlalchemy.palletsprojec...
Create aar file in Android Studio
... answered Oct 16 '16 at 18:58
cn123hcn123h
2,16511 gold badge1818 silver badges1414 bronze badges
...
Get JSON object from URL
...#000000005f2b81c80000000076756fef> {}
>>> $q->{'qwert-y'} = 123
=> 123
>>> var_dump($q);
class stdClass#174 (1) {
public $qwert-y =>
int(123)
}
=> null
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How can I match on an attribute that contains a certain string?
...wered Mar 27 '11 at 12:58
surupa123surupa123
5,15911 gold badge1212 silver badges44 bronze badges
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Convert columns to string in Pandas
...der,
# Setup
df = pd.DataFrame({'A': ['a', 'b', 'c'], 'B': [{}, [1, 2, 3], 123]})
df
A B
0 a {}
1 b [1, 2, 3]
2 c 123
Upto pandas 0.25, there was virtually no way to distinguish that "A" and "B" do not have the same type of data.
# pandas <= 0.25
df.dtypes
A ...
What is a non-capturing group in regular expressions?
...
[] is a set; [123] matches any char inside the set once; [^123] matches anything NOT inside the set once; [^/\r\n]+ matches one or more chars that are different from /, \r, \n.
– Ricardo Nolde
Jun 5 ...
Using cURL with a username and password?
...syntax
curl http://username:password@api.somesite.com/test/blah?something=123
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How can I get the concatenation of two lists in Python without modifying either one? [duplicate]
...;>> sum([(1,2), (1,), ()], ())
(1, 2, 1)
>>> sum([Counter('123'), Counter('234'), Counter('345')], Counter())
Counter({'1':1, '2':2, '3':3, '4':2, '5':1})
>>> sum([True, True, False], False)
2
With the notable exception of strings:
>>> sum(['123', '345', '567'],...
HTML.ActionLink vs Url.Action in ASP.NET Razor
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@Html.ActionLink("link text", "someaction", "somecontroller", new { id = "123" }, null)
generates:
<a href="/somecontroller/someaction/123">link text</a>
and Url.Action("someaction", "somecontroller", new { id = "123" }) generates:
/somecontroller/someaction/123
There is also Ht...