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Count the number of occurrences of a string in a VARCHAR field?
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Niladri BiswasNiladri Biswas
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add a com...
How to properly reuse connection to Mongodb across NodeJs application and modules
...re( 'mongodb' ).MongoClient;
const url = "mongodb://localhost:27017";
var _db;
module.exports = {
connectToServer: function( callback ) {
MongoClient.connect( url, { useNewUrlParser: true }, function( err, client ) {
_db = client.db('test_db');
return callback( err );
} );...
Too many 'if' statements?
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answered Mar 19 '14 at 9:32
laaltolaalto
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How can I efficiently select a Standard Library container in C++11?
...ited May 16 '16 at 7:29
user2508324
answered May 22 '12 at 11:26
Matthieu M.Matthieu M.
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What is the correct way of using C++11's range-based for?
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PuppyPuppy
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6
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Best way to encode text data for XML in Java?
...e.
– Chase Seibert
Jan 13 '09 at 18:32
2
Use StringEscapeUtils.escapeXml(str) from commons-lang. ...
How to check if all list items have the same value and return it, or return an “otherValue” if they
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answered Dec 8 '10 at 17:32
KeithSKeithS
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How to make a phone call using intent in Android?
...ent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:0987654321"));
startActivity(intent);
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What are the differences between “=” and “
...
Let’s see.
In any piece of code of the general form …
‹function_name›(‹argname› = ‹value›, …)
‹function_name›(‹args›, ‹argname› = ‹value›, …)
… the = is the token that defines named argument passing: it is not the assignment operator. Furthermore, = is e...
performSelector may cause a leak because its selector is unknown
... should simply be ignored, and it's easy to work around. Here's how:
if (!_controller) { return; }
SEL selector = NSSelectorFromString(@"someMethod");
IMP imp = [_controller methodForSelector:selector];
void (*func)(id, SEL) = (void *)imp;
func(_controller, selector);
Or more tersely (though hard...