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Is JavaScript a pass-by-reference or pass-by-value language?
...oduces the output:
10
changed
unchanged
If obj1 was not a reference at all, then changing obj1.item would have no effect on the obj1 outside of the function.
If the argument was a proper reference, then everything would have changed. num would be 100, and obj2.item would read "changed".
Instea...
How do I disable a jquery-ui draggable?
...docs for draggable() are here. Same goes for sortable() objects (if you're allowing drag-n-drop reordering.)
– nickb
Apr 7 '11 at 2:52
...
Rails: convert UTC DateTime to another time zone
...e names of the ActiveSupport time zones by doing:
ActiveSupport::TimeZone.all.map(&:name)
# or for just US
ActiveSupport::TimeZone.us_zones.map(&:name)
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How to print colored text in Python?
... the output to a file; while tools like cat may support colors, it is generally better to not print color information to files.
– Sebastian Mach
Apr 9 '14 at 6:27
1
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Git-Based Source Control in the Enterprise: Suggested Tools and Practices?
...u can do branches
in Subversion, but the fact that they
are visible to all discourages people
from opening up a branch for
experimental work. Similarly a DVCS
encourages check-pointing of work:
committing incomplete changes, that
may not even compile or pass tests, to
your local repo...
How to run eclipse in clean mode? what happens if we do so?
....
How to use it:
Edit the eclipse.ini file located in your Eclipse install directory and insert -clean as the first line.
Or edit the shortcut you use to start Eclipse and add -clean as the first argument.
Or create a batch or shell script that calls the Eclipse executable with the -clean argu...
How to print last two columns using awk
All I want is the last two columns printed.
6 Answers
6
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How do I find which transaction is causing a “Waiting for table metadata lock” state?
...S
We can use INFORMATION_SCHEMA Tables.
Useful Queries
To check about all the locks transactions are waiting for:
USE INFORMATION_SCHEMA;
SELECT * FROM INNODB_LOCK_WAITS;
A list of blocking transactions:
SELECT *
FROM INNODB_LOCKS
WHERE LOCK_TRX_ID IN (SELECT BLOCKING_TRX_ID FROM INNODB_L...
How to prevent Node.js from exiting while waiting for a callback?
...
Callback is Not Queued
Node runs until all event queues are empty. A callback is added to an event queue when a call such as
emmiter1.on('this_event',callback).
has executed. This call is part of the code written by th...
Reliable way for a Bash script to get the full path to itself [duplicate]
...ing a script that isn't coming from a file in an accessible file system at all (which is perfectly possible), is not catered to there (or in any of the other answers I've seen).
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