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Liquibase lock - reasons?
..., then the lock remains stuck.
Then running
UPDATE DATABASECHANGELOGLOCK SET LOCKED=0, LOCKGRANTED=null, LOCKEDBY=null where ID=1;
against the database helps.
Or you can simply drop the DATABASECHANGELOGLOCK table, it will be recreated.
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if A vs if A is not None:
...g. when testing whether a variable or argument that defaults to
None was set to some other value. The other value might have a type
(such as a container) that could be false in a boolean context!
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How to style a JSON block in Github Wiki?
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}
Result
If you want to have keys a different colour to the parameters, set your language as yaml
@Ankanna's answer gave me the idea of going through github's supported language list and yaml was my best find.
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Java “user.dir” property - what exactly does it mean?
...t correct that this property points to the current working directory (e.g. set by the 'cd' command)?
4 Answers
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How to verify a user's password in Devise
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That would set user to a boolean value (whether the password was valid or not).
– Ryan Taylor
Jun 2 '15 at 16:45
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PowerShell and the -contains operator
...o strings.
-match and -imatch are regular expression string matchers, and set automatic variables to use with captures.
-like, -ilike are SQL-like matchers.
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How to add a “readonly” attribute to an ?
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A word of caution with using $.prop(): Prop will set the readonly attribute to blank/empty string, so if you have have any CSS that uses the attribute selector for [readonly="readonly"], then you'll have to change this to [readonly] (or include both).
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What reason is there to use null instead of undefined in JavaScript?
...the JS compiler will take care for you. At compile time the JS engine will set the value of all hoisted variables to undefined. As the engine steps through the code and values becomes available the engine will assign respective values to respective variables. For those variables for whom it did not ...
Find and Replace text in the entire table using a MySQL query
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For a single table update
UPDATE `table_name`
SET `field_name` = replace(same_field_name, 'unwanted_text', 'wanted_text')
From multiple tables-
If you want to edit from all tables, best way is to take the dump and then find/replace and upload it back.
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Django filter queryset __in for *every* item in list
...additional filter adds more joins, which should not be a problem for small set of categories.
There is the aggregation approach. This query would be shorter and perhaps quicker for a large set of categories.
You also have the option of using custom queries.
Some examples
Test setup:
class Pho...