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MySQL LIKE IN()?
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To get the regexp value from a column: (select group_concat(myColumn separator '|') from..)
– daVe
Nov 28 '15 at 1:05
5
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What is the most efficient way to create HTML elements using jQuery?
...ome numbers on the suggestions so far (safari 3.2.1 / mac os x):
var it = 50000;
var start = new Date().getTime();
for (i = 0; i < it; ++i) {
// test creation of an element
// see below statements
}
var end = new Date().getTime();
alert( end - start );
var e = $( document...
Max or Default?
...f it is actually the minimum. To determine which option is more efficient (Concat, FirstOrDefault or Take(1)), you should perform adequate benchmarking.
double x = context.MyTable
.Where(y => y.MyField == value)
.Select(y => y.MyCounter)
.Concat(new double[]{Double.MinValue})
...
How do I check if an index exists on a table field in MySQL?
... b.table_type = 'BASE TABLE'
left join (
select concat(x.name, '/', y.name) full_path_schema, y.name index_name
FROM information_schema.INNODB_SYS_TABLES as x
JOIN information_schema.INNODB_SYS_INDEXES as y on x.TABLE_ID = y.TABLE_ID
WHERE x.name = 'your_schema'
...
How to check if an object is an array?
...r ];
}
Or if you're not concerned about performance, you could just do a concat to a new empty Array.
someVar = [].concat( someVar );
There's also the constructor which you can query directly:
if (somevar.constructor.name == "Array") {
// do something
}
Check out a thorough treatment f...
How to do ToString for a possibly null object?
...nger than just "" + myObj. But I've read that creates extra strings. str.Concat(myObj) seems to work just fine and is "even faster".
– drzaus
Dec 1 '17 at 17:48
add a commen...
How can I determine if a date is between two dates in Java? [duplicate]
...er year = cal.get(Calendar.YEAR);
oeStartDateStr = oeStartDateStr.concat(year.toString());
oeEndDateStr = oeEndDateStr.concat(year.toString());
Date startDate = sdf.parse(oeStartDateStr);
Date endDate = sdf.parse(oeEndDateStr);
Date d = new Date();
S...
C# Sanitize File Name
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string clean = String.Concat(dirty.Split(Path.GetInvalidFileNameChars()));
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private final static attribute vs private final attribute
...eful use case scenario for that. This could be beneficial if you have like 50000 int vars in a class. Even in this case, this would save up 200kb of memory. Since we are talking Java, this seems totally irrelevant. In case of memory critical devices, a decent C or C++ compiler would inline those int...
How to change collation of database, table, column?
...ll tables to a certain type (utf8_general_ci in my example below).
SELECT concat
(
'ALTER TABLE ',
t1.TABLE_SCHEMA,
'.',
t1.table_name,
' MODIFY ',
t1.column_name,
' ',
...