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Check number of arguments passed to a Bash script
I would like my Bash script to print an error message if the required argument count is not met.
10 Answers
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Dealing with “java.lang.OutOfMemoryError: PermGen space” error
Recently I ran into this error in my web application:
32 Answers
32
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Parse large JSON file in Nodejs
... values with double quotes. In other words, {name:'thing1'} will throw an error; you must use {"name":"thing1"}.
Because no more than a chunk of data will ever be in memory at a time, this will be extremely memory efficient. It will also be extremely fast. A quick test showed I processed 10,000 ...
Exit single-user mode
...atabase is in Single User mode. When I try to expand me database, I get an error:
18 Answers
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UnicodeDecodeError: 'utf8' codec can't decode byte 0x9c
...://docs.python.org/howto/unicode.html#the-unicode-type
str = unicode(str, errors='replace')
or
str = unicode(str, errors='ignore')
Note: This will strip out (ignore) the characters in question returning the string without them.
For me this is ideal case since I'm using it as protection agains...
Efficiency of premature return in a function
...If the simple example above is extended with resource allocation, and then error checking with a potential resulting freeing of resources, the picture might change.
Consider the naive approach beginners might take:
int func(..some parameters...) {
res_a a = allocate_resource_a();
if (!a) {
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input() error - NameError: name '…' is not defined
I am getting an error when I try to run this simple script:
14 Answers
14
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What is the Difference Between read() and recv() , and Between send() and write()?
...tagram, both, recv and read will deliver no data to the caller but also no error. For the caller, the behavior is the same. The caller may not even know anything about datagrams (it may not know that this is a socket and not a file, it may not know that this is a datagram socket and not a stream soc...
How to print to stderr in Python?
... when I'm trying to debug something. (I'd rather not introduce new syntax errors!) :-)
– Dan H
Nov 20 '14 at 14:49
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Rails: Logging the entire stack trace of an exception
... to log a stack trace. I came across this link which states that logger.error $!, $!.backtrace is the way to go but that does not work for me log_error does. As per documentation I do not see how passing a second argument to the error method would work anyway because the ruby logger that rails...