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Setting variable to NULL after free
...ou get an immediate crash on most systems, telling you right away what the error is.
For local variables, it may be a little bit pointless if it is "obvious" that the pointer isn't accessed anymore after being freed, so this style is more appropriate for member data and global variables. Even for l...
Iterating over each line of ls -l output
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find is broken. Ioften get some bizarro error messages. it wants to give me help when the commandline is perfectly valid, and it seems like once it starts doing this, it won't stop until next reboot MAYBE. it sometimes seems random in nature concerning errors. not ...
Convert tuple to list and back
...st block to convert the tuple t to a list by passing t to list(), I get an error message: "*** Error in argument: '(t)'" This seems to happen to me only while debugging. Still confused.
– Jimmy
Aug 28 '18 at 19:30
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Get final URL after curl is redirected
...ile.
– Steven Penny
Jun 15 '14 at 2:05
2
Some websites also need a spoofed user agent with curl -...
With MySQL, how can I generate a column containing the record index in a table?
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– Daniel Vassallo
Feb 27 '12 at 23:05
20
People should be aware that this row number is calculat...
When to use lambda, when to use Proc.new?
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As of Ruby 2.5, break from Procs raises LocalJumpError, whereas break from lambdas behaves just like return (i.e., return nil).
– Masa Sakano
Oct 16 '18 at 20:35
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htaccess Access-Control-Allow-Origin
...r set Access-Control-Allow-Origin "*" in your config, then it should throw error during start if mod_headers is not active.
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Initialize a long in Java
...ormed.
Try this
byte a = 1; // declare a byte
a = a*2; // you will get error here
You get error because 2 is by default int.
Hence you are trying to multiply byte with int.
Hence result gets typecasted to int which can't be assigned back to byte.
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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
Why am I getting this database error when I update a table?
14 Answers
14
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Python: Making a beep noise
...'re using Python 3, don't forget to use parentheses or you'll get a syntax error. Use print('\a')
– ZorroDeLaArena
Mar 27 '15 at 19:38
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