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How to deal with persistent storage (e.g. databases) in Docker
...nly container pattern must be abandoned in favour of the new volumes.
Actually the volume API is only a better way to achieve what was the data-container pattern.
If you create a container with a -v volume_name:/container/fs/path Docker will automatically create a named volume for you that can:
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PostgreSQL - Rename database
...isconnect from the database to be renamed
\c postgres
-- force disconnect all other clients from the database to be renamed
SELECT pg_terminate_backend( pid )
FROM pg_stat_activity
WHERE pid <> pg_backend_pid( )
AND datname = 'name of database';
-- rename the database (it should now have...
POST unchecked HTML checkboxes
... Hard to believe authors designed it this way. Why not to send all input fields with some default value for those not checked :( It would be much clearer solution then having to implement some hidden fields "hack". It must have been clear that it is going to be needed and they had to see...
What is the difference between print and puts?
... There is another thing ... extend the array class and override the to_s method. puts doesn't use the new to_s for an object of your new class while print does
– kapv89
Oct 28 '12 at 18:30
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Find difference between timestamps in seconds in PostgreSQL
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Try:
SELECT EXTRACT(EPOCH FROM (timestamp_B - timestamp_A))
FROM TableA
Details here: EXTRACT.
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How to explore web-based Google Play in another country?
if I go to play.google.com, it automatically recognizes my country and allow me to browse the apps for that country. I can change the language through the dropdown in the footer, or I can add &hl=code in the querystring...but that only changes the language...not the store content (the app lists and ...
Obtain Bundle Identifier programmatically
...n approach to get the value. ARC example is following:
NSString *value = (__bridge_transfer NSString *)CFDictionaryGetValue(CFBundleGetInfoDictionary(CFBundleGetMainBundle()),
(const void *)(@"CFBundleIdentifier"));
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How to get jQuery dropdown value onchange event
...nswered Nov 12 '13 at 7:00
power_scriptorpower_scriptor
2,94411 gold badge1212 silver badges1616 bronze badges
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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 validate phone numbers using regex
...trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
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