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Fixing “Lock wait timeout exceeded; try restarting transaction” for a 'stuck" Mysql table?
...on_schema`.`innodb_trx` ORDER BY `trx_started`;
Check lock dependency - what blocks what
SELECT * FROM `information_schema`.`innodb_locks`;
After investigating the results above, you should be able to see what is locking what.
The root cause of the issue might be in your code too - please che...
Save Screen (program) output to a file
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Thanks. Is there is a way to output what screen already has in its output buffer? E.g. I forgot to enable logging, but output is available in the scroll screen buffer - how to write that to a file?
– Tagar
Jun 29 '15 at 22...
How do I declare class-level properties in Objective-C?
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That is really cool. But what on earth does self mean inside a class method?
– Todd Lehman
Apr 11 '13 at 5:45
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How to include (source) R script in other scripts
...ty R script, util.R, which I want to use from other scripts in my project.
What is the proper way to ensure that the function this script defines are available to function in my other scripts?
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Why can't I make a vector of references?
...on is required. Member access does not do that, hence the need for .get(). What timdiels wants is operator.; have a look at the latest proposals/discussions about that.
– underscore_d
Sep 30 '18 at 12:50
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Official reasons for “Software caused connection abort: socket write error”
...ing bad happened on the network". It would be really helpful to understand what further logs and other records of activity could allow me to pinpoint the underlying issue.
– Derek Bennett
Mar 20 '17 at 14:05
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Percentage width in a RelativeLayout
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Why we need a workaround at all is what I want to know. This is a basic and long-standing feature of HTML. Surely the Android developers could have looked over at HTML to get some sense of what people are going to need and use!
– JohnK
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Difference between python3 and python3m executables
What is the difference between the /usr/bin/python3 and /usr/bin/python3m executibles?
1 Answer
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Enums and Constants. Which to use when?
...How would I know when to use a constant rather than an enum or vice versa. What are some of the advantages of using enums?
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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
... Strings and Arrays also respond to :[], but the returned value may not be what you want, and Array raises exception for Strings or Symbols used as indexes.
That is the reason why in the suggested form of this method (below) the (usually ugly) test for .is_a?(Hash) is used instead of (usually bette...