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Using Java to find substring of a bigger string using Regular Expression
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Foo[Bar] => Bar
Foo[Bar[test]] => Bar[test]
Note: You should add error checking if the input string is not well formed.
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How to iterate over arguments in a Bash script
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Use "$@" to represent all the arguments:
for var in "$@"
do
echo "$var"
done
This will iterate over each argument and print it out on a separate line. $@ behaves like $* except that when quoted the arguments are broken up properly if there...
How can I get Express to output nicely formatted HTML?
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This worked, but I had to install a bunch of extra dependencies, namely promise, uglify-js, css and lexical-scope before it would run again (it would build, but crash on first request). I only added that one line.
– CWSpear
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How do I see a C/C++ source file after preprocessing in Visual Studio?
... the generation of obj files. So if you put /P options, you may get link a error saying some obj files cannot be found because it is actually not generated at all.
– smwikipedia
Aug 9 '16 at 2:16
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Git Alias - Multiple Commands and Parameters
...ing redirections and return the status 0. Here're some usages: 1. a=123;$a errors, but a=123; : $a does not. 2. : > hello.txt empties hello.txt. 3. if [ "$a" = "hello" ];then : ;fi runs okay but errors without ':'. It's like pass in python. 4. : this is a comment, the colon followed by space work...
Rails: select unique values from a column
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This throws an error with Rails 5.1 / AR 5.1 => undefined method `uniq'
– Graham Slick
Aug 11 '17 at 12:06
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...emory:
Initializing buffer pool, size = 512.0M
A few lines down, the error message tells you MySQL will not start because it cannot reserve enough (512M) memory for the InnoDB buffer pool:
Fatal error: cannot allocate memory for the buffer pool
That begs three questions:
How much memor...
Ternary operator (?:) in Bash
...ug: if op1 has a nonzero exit status, op2 silently becomes the result; the error will also not be caught in -e mode. So, that expression is only safe to use if op1 can never fail (e.g., :, true if a builtin, or variable assignment without any operations that can fail (like division and OS calls)).
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What HTTP status response code should I use if the request is missing a required parameter?
...was unable to process the contained
instructions. For example, this error condition may occur if an XML
request body contains well-formed (i.e., syntactically correct), but
semantically erroneous, XML instructions.
They state that malformed xml is an example of bad syntax (calli...
Android Studio Google JAR file causing GC overhead limit exceeded error
I am using Android Studio on OS X. I am getting this error message:
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