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Split value from one field to two
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Unfortunately MySQL does not feature a split string function. However you can create a user defined function for this, such as the one described in the following article:
MySQL Split String Function by Federico Cargnelutti
With that function:
DELIMITER $$
CREATE ...
How to pretty-print a numpy.array without scientific notation and with given precision?
...rks great. As a side note, you can also use set_printoptions if you want a string representation and not necessarily use print. You can just call __str__() of the numpy array instance and you will get the formatted string as per the printoptions you set.
– Jayesh
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Git and nasty “error: cannot lock existing info/refs fatal”
...from remote git repository (at bettercodes)
I made some changes, commited
and tried to push:
23 Answers
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Should everything really be a bundle in Symfony 2.x?
... * @param array $controller
* @param Request $request
* @param string $engine
* @throws InvalidArgumentException
* @return TemplateReference
*/
public function guessTemplateName($controller, Request $request, $engine = 'twig')
{
if (!preg_match('/Controlle...
What are Java command line options to set to allow JVM to be remotely debugged?
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I have this article bookmarked on setting this up for Java 5 and below.
Basically run it with:
-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=1044
For Java 5 and above, run it with:
-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=1044
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Token Authentication vs. Cookies
... the transfer
Other. Other transfer mechanisms may be utilized, e.g. query string was a choice to transfer auth ID for a while but was abandoned for its insecurity
STATEFULNESS COMPARISON
"Stateful authorization" means the server stores and maintains user authorization info on server, making aut...
What's the name for hyphen-separated case?
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There isn't really a standard name for this case convention, and there is disagreement over what it should be called.
That said, as of 2019, there is a strong case to be made that kebab-case is winning:
https://trends.google.com/trends/explore?da...
How to change webservice url endpoint?
...ice();
Echo port = service.getEchoPort();
/* Set NEW Endpoint Location */
String endpointURL = "http://NEW_ENDPOINT_URL";
BindingProvider bp = (BindingProvider)port;
bp.getRequestContext().put(BindingProvider.ENDPOINT_ADDRESS_PROPERTY, endpointURL);
System.out.println("Server said: " + echo.echo(a...
SQL keys, MUL vs PRI vs UNI
...------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+---------+------+-----+---------+-------+
| foo | int(11) | YES | | NULL | |
+-------+---------+------+-----+---------+-------+
1 row in set (0.00 sec)
A table with one column and an index o...
Purge Kafka Topic
...t>:2181 --alter --topic <topic name> --config retention.ms=1000
And in newer Kafka releases, you can also do it with kafka-configs --entity-type topics
kafka-configs.sh --zookeeper <zkhost>:2181 --entity-type topics --alter --entity-name <topic name> --add-config retention.ms...