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Purge Kafka Topic
...--entity-name <topic name> --add-config retention.ms=1000 This also allows you to check the current retention period, e.g. kafka-configs --zookeeper <zkhost>:2181 --describe --entity-type topics --entity-name <topic name>
– RHE
Jun 2 '16 at ...
How to check whether an array is empty using PHP?
... is empty.
}
If you need to clean out empty values before checking (generally done to prevent explodeing weird strings):
foreach ($playerlist as $key => $value) {
if (empty($value)) {
unset($playerlist[$key]);
}
}
if (empty($playerlist)) {
//empty array
}
...
no new variables on left side of :=
...d := can't be used with _? e.g. _ := someFunc()
– stt106
Mar 10 '19 at 8:34
add a comment
...
jquery disable form submit on enter
...
Usually form is submitted on Enter when you have focus on input elements.
We can disable Enter key (code 13) on input elements within a form:
$('form input').on('keypress', function(e) {
return e.which !== 13;
});
DEMO: ...
Swift - How to convert String to Double
...ocumentation:(They are not locale-aware) The following convenience methods all skip initial space characters (whitespaceSet) and ignore trailing characters. They are not locale-aware. NSScanner or NSNumberFormatter can be used for more powerful and locale-aware parsing of numbers.
...
The smallest difference between 2 Angles
...les in the range -PI -> PI around a coordinate, what is the value of the smallest of the 2 angles between them?
9 Answers
...
How to select first parent DIV using jQuery?
...
parents("div") is traversing and returns all the parent div's you should use .eq(0) after it to make sure it returns just the one you want
– meo
Aug 17 '11 at 7:44
...
Downloading a file from spring controllers
...onScott Carlson
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10
...
Fit background image to div
...s of the div, I think this is the most elegant solution:
background-size: 100% 100%;
If not, the answer by @grc is the most appropriated one.
Source:
http://www.w3schools.com/cssref/css3_pr_background-size.asp
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...
Saving enum from select in Rails 4.1
...;/option>
</select>
Values went from "0" to "red" and now we're all set.
If you're using a regular ol' rails text_field it's:
f.select :color, Wine.colors.keys.to_a
If you want to have clean human-readable attributes you can also do:
f.select :color, Wine.colors.keys.map { |w| [w...