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if, elif, else statement issues in Bash
...if[). Only after having parsed the statement it would be executed (and an error message like elif[: command not found would be output).
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Disable browser's back button
... browser, but you can make it so that your application breaks (displays an error message, requiring the user to start over) if the user goes back.
One approach I have seen for doing this is to pass a token on every URL within the application, and within every form. The token is regenerated on ever...
SQL how to increase or decrease one for a int column in one command
...at is, you try to do the creation first. If it's already there, ignore the error. Otherwise you create it with a 0 value.
Then do the update which will work correctly whether or not:
the row originally existed.
someone updated it between your insert and update.
It's not a single instruction and...
Check if a String contains numbers Java
.... If it does, then I think this will produce an "illegal escape character" error.
– w3bshark
Sep 29 '17 at 15:51
this ...
What is the scope of variables in JavaScript?
...perties on the global object.
Examples
The following will throw a ReferenceError because the namesx, y, and z have no meaning outside of the function f.
function f() {
var x = 1
let y = 1
const z = 1
}
console.log(typeof x) // undefined (because var has function scope!)
console.log(t...
How to convert List to List?
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I'm getting an error when omitting the arrow syntax. This works: List<string> sss = new List<string>(); IEnumerable<int> test1 = sss.Select<string, int>(x => Convert.ToInt32(x)); but this does not: IEnumerable<...
How do I add tab completion to the Python shell?
....pythonrc
# enable syntax completion
try:
import readline
except ImportError:
print("Module readline not available.")
else:
import rlcompleter
readline.parse_and_bind("tab: complete")
then in your .bashrc file, add
export PYTHONSTARTUP=~/.pythonrc
That seems to work.
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Multiple commands on same line
...
Very useful also for the ability to hand errors with try/catch.
– Immanuel Weihnachten
Sep 23 '16 at 9:11
2
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POST Content-Length exceeds the limit
I get similar errors in my error_log in php when users are uploading their files
9 Answers
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Create new tmux session from inside a tmux session
...use we're creating a new detached session. Otherwise you'll get a nesting error.
$ tmux new -s development -d
$ tmux new -s foo -d
$ tmux ls
> development: 1 windows (created Wed Jan 13 11:31:38 2016) [204x54]
> foo: 1 windows (created Wed Jan 13 11:31:38 2016) [204x54]
$ tmux attach -t
$ tm...