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How can I find an element by CSS class with XPath?
...", @Tomalak's version provided in the comments is better:
//div[contains(concat(' ', @class, ' '), ' Test ')]
If you wished to be really certain that it will match correctly, you could also use the normalize-space function to clean up stray whitespace characters around the class name (as mention...
MySQL JOIN the most recent row only?
...
You may want to try the following:
SELECT CONCAT(title, ' ', forename, ' ', surname) AS name
FROM customer c
JOIN (
SELECT MAX(id) max_id, customer_id
FROM customer_data
GROUP BY customer_id
) c...
Adding two Java 8 streams, or an extra element to a stream
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If you add static imports for Stream.concat and Stream.of, the first example could be written as follows:
Stream<Foo> stream = concat(stream1, concat(stream2, of(element)));
Importing static methods with generic names can result in code that becomes dif...
Return all enumerables with yield return at once; without looping through
...ods each returning an IEnumerable<ErrorInfo>, you can use Enumerable.Concat to make your code simpler:
private static IEnumerable<ErrorInfo> GetErrors(Card card)
{
return GetMoreErrors(card).Concat(GetOtherErrors())
.Concat(GetValidationErrors())
...
How can I return pivot table output in MySQL?
...nother way to generate a pivot table without using "if", "case", or "GROUP_CONCAT": en.wikibooks.org/wiki/MySQL/Pivot_table
– user2513149
Oct 16 '16 at 16:15
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Elegant way to combine multiple collections of elements?
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I think you might be looking for LINQ's .Concat()?
var combined = foo.Concat(bar).Concat(foobar).Concat(...);
Alternatively, .Union() will remove duplicate elements.
share
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How do I kill all the processes in Mysql “show processlist”?
...n saves time. Do it in MySql itself:
Run these commands
mysql> select concat('KILL ',id,';') from information_schema.processlist
where user='root' and time > 200 into outfile '/tmp/a.txt';
mysql> source /tmp/a.txt;
Reference
---------edit------------
if you do not want to store in f...
String output: format or concat in C#?
Let's say that you want to output or concat strings. Which of the following styles do you prefer?
31 Answers
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what is the preferred way to mutate a React state?
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concat returns a new array, so you can do
this.setState({list: this.state.list.concat([newObject])});
another alternative is React's immutability helper
var newState = React.addons.update(this.state, {
list : {
...
Finding duplicate values in MySQL
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@NobleUplift You can do a GROUP_CONCAT(id) and it will list the IDs. See my answer for an example.
– Matt Rardon
Feb 19 '15 at 0:53
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