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Comparing mongoose _id and strings
...ls() method. With your example, results.userId.equals(AnotherMongoDocument._id). The ObjectID type also has a toString() method, if you wish to store a stringified version of the ObjectID in JSON format, or a cookie.
If you use ObjectID = require("mongodb").ObjectID (requires the mongodb-native lib...
Recommended way of making React component/div draggable
...;
return result;
};
class Draggable extends React.PureComponent {
_relX = 0;
_relY = 0;
_ref = React.createRef();
_onMouseDown = (event) => {
if (event.button !== 0) {
return;
}
const {scrollLeft, scrollTop, clientLeft, clientTop} = docume...
UICollectionView Set number of columns
...orCellWithReuseIdentifier: "Cell")
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 59
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICo...
Forward an invocation of a variadic function in C
...
If you don't have a function analogous to vfprintf that takes a va_list instead of a variable number of arguments, you can't do it. See http://c-faq.com/varargs/handoff.html.
Example:
void myfun(const char *fmt, va_list argp) {
vfprintf(stderr, fmt, argp);
}
...
_=> what does this underscore mean in Lambda expressions?
What does an lambda expression like _=> expr mean?
5 Answers
5
...
Any reason not to use '+' to concatenate two strings?
...ucture, especially if it is growing. With list you can use list.extend(list_of_items) and list.append(item) which are much faster when concatenating stuff dynamically.
– Antti Haapala
Sep 11 '12 at 9:56
...
Preserving signatures of decorated functions
...nstall decorator module:
$ pip install decorator
Adapt definition of args_as_ints():
import decorator
@decorator.decorator
def args_as_ints(f, *args, **kwargs):
args = [int(x) for x in args]
kwargs = dict((k, int(v)) for k, v in kwargs.items())
return f(*args, **kwargs)
@args_as_int...
Regex Named Groups in Java
...> TEST
matcher.name(1) ==> login
Replace
matcher.replaceAll("aaaaa_$1_sssss_$2____") ==> aaaaa_TEST_sssss_123____
matcher.replaceAll("aaaaa_${login}_sssss_${id}____") ==> aaaaa_TEST_sssss_123____
(extract from the implementation)
public final class Pattern
implements java.io...
When to use setAttribute vs .attribute= in JavaScript?
... don't really feel I understand this yet.
– temporary_user_name
Oct 24 '13 at 21:48
1
@Aerovistae...
Get ID of last inserted document in a mongoDB w/ Java driver
...me", "Matt" );
collection.insert( doc );
ObjectId id = (ObjectId)doc.get( "_id" );
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