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What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V
...to keep changes made in subsequent revisions.
For details please refer to https://www.perforce.com/perforce/r13.1/manuals/p4v/Working_with_changelists.html
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How do I change bash history completion to complete what's already on the line?
...search-forward
To reload, source ~/.zshrc or relaunch terminal.
Source: https://superuser.com/a/418299/71680
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How to test an SQL Update statement before running it?
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What about Transactions? They have the ROLLBACK-Feature.
@see https://dev.mysql.com/doc/refman/5.0/en/commit.html
For example:
START TRANSACTION;
SELECT * FROM nicetable WHERE somthing=1;
UPDATE nicetable SET nicefield='VALUE' WHERE somthing=1;
SELECT * FROM nicetable WHERE somthing=1...
Why can't enum's constructor access static fields?
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How to display unique records from a has_many through relationship?
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Git: Set up a fetch-only remote?
...'s checked-out working directory.
This answer gives a simple explanation: https://stackoverflow.com/a/2933656/1866402
(I am adding this as an answer because I don't have enough reputation to add comments yet)
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HTML5 Audio stop function
...it results in the following error (in console) [Security Error: Content at https://localhost/url.html may not load data from blob:https://localhost/cac32534-78b0-4a62-8355-cc8f1e708d64.] It appears to have no negative effect as the code continues to execute after this (unlike an uncaught Exception)....
Bootstrap: Position of dropdown menu relative to navbar item
...pdown-item" href="#">...</a>
</div>
</li>
Fiddle: https://jsfiddle.net/joeczucha/f8h2tLoc/
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What's the (hidden) cost of Scala's lazy val?
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I've written a post with regard to this issue https://dzone.com/articles/cost-laziness
In nutshell, the penalty is so small that in practice you can ignore it.
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background function in Python
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