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How do I implement basic “Long Polling”?
...chance of returning an error 404 (to show error handling in the coming Javascript example)
msgsrv.php
<?php
if(rand(1,3) == 1){
/* Fake an error */
header("HTTP/1.0 404 Not Found");
die();
}
/* Send a string after a random number of seconds (2-10) */
sleep(rand(2,10));
echo("Hi! Ha...
Export and Import all MySQL databases at one time
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You can simplify/improve the script a bit: Replace the 9th line [databases=...] with these two lines: ExcludeDatabases="Database|information_schema|performance_schema|mysql" [next line] databases=`-u $USER -p$PASWORD -e "SHOW DATABASES;" | tr -d "| " | e...
How to prevent Node.js from exiting while waiting for a callback?
...ventEmitter.emit('myevent', {something: "Bla"})
});
The last thing in my script was the eventEmitter.on:
eventEmitter.on('myevent', function(myResult){
// I needed the result to be written to stdout so that the calling process could get it
process.stdout.write(JSON.stringify(myResult));
});
...
RVM is not working in ZSH
...
Do you have this line in your ~/.zshrc?
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"
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Can I install Python 3.x and 2.x on the same Windows computer?
...rs into %SYSTEMROOT% (C:\Windows) which is then associated with py and pyw scripts, respectively.
In order to use the new launcher (without manually setting up your own associations to it), leave the "Register Extensions" option enabled. I'm not quite sure why, but on my machine it left Py 2.7 as ...
Get current directory name (without full path) in a Bash script
How would I get just the current working directory name in a bash script, or even better, just a terminal command.
20 Answe...
How to suppress warnings globally in an R Script
I have a long R script that throws some warnings, which I can ignore.
I could use
4 Answers
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How to play audio?
I am making a game with HTML5 and JavaScript.
19 Answers
19
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Selecting the last value of a column
... finds a value that is not an empty string. Finally it retunrs the value.
Script:
function lastValue(column) {
var lastRow = SpreadsheetApp.getActiveSheet().getMaxRows();
var values = SpreadsheetApp.getActiveSheet().getRange(column + "1:" + column + lastRow).getValues();
for (; values[lastR...
horizontal scrollbar on top and bottom of table
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yes I got it to work, I had only add <script type="text/javascript" src="path"></script> to <head>. So everytime I add jquery I had to add the one that @fudgey add? Sorry, javascript and jquery are still kind of chinese to me
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