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SELECT * WHERE NOT EXISTS
...r original query will always return nothing unless there are no records at all in eotm_dyn, in which case it will return everything.
Assuming these tables should be joined on employeeID, use the following:
SELECT *
FROM employees e
WHERE NOT EXISTS
(
SELECT null
...
Error handling in getJSON calls
How can you handle errors in a getJSON call? Im trying to reference a cross-domain script service using jsonp, how do you register an error method?
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Disable validation of HTML5 form elements
...hrome, and if you catch the "invalid" event and return false that seems to allow form submission.
I am using jquery, with this HTML.
// suppress "invalid" events on URL inputs
$('input[type="url"]').bind('invalid', function() {
alert('invalid');
return false;
});
document.forms[0].o...
How to debug template binding errors for KnockoutJS?
...
If you are using Chrome for development, there is a really great extension (with which I'm not affiliated) called Knockoutjs context debugger that shows you the binding context directly in the Developer Tools' Elements panel.
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How to write to file in Ruby?
...rs cleaning up outdated questions and answers. Makes for a better site overall.
– jdl
Oct 11 '12 at 16:43
7
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What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
... Internet access. I cannot run Jekyll server without Internet. Is it a small bug?
2 Answers
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Replace non-numeric with empty string
...t in our project. A field in our DB to hold a phone number is set to only allow 10 characters. So, if I get passed "(913)-444-5555" or anything else, is there a quick way to run a string through some kind of special replace function that I can pass it a set of characters to allow?
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Checking if output of a command contains a certain string in a shell script
...ev/null
if [ $? == 0 ]; then
echo "matched"
fi
which is done idiomatically like so:
if ./somecommand | grep -q 'string'; then
echo "matched"
fi
and also:
./somecommand | grep -q 'string' && echo 'matched'
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Executing command line programs from within python [duplicate]
...n os.system.
import subprocess
#subprocess.check_output(['ls', '-l']) # All that is technically needed...
print(subprocess.check_output(['ls', '-l']))
share
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improve this answer
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How to modify the keyboard shortcuts in Eclipse IDE?
Title more or less says it all. Specifically, I've become increasingly annoyed that in order to run an ant script I have to use Alt + Shift + x , q . But I think If I had this power I would many things I would change the shortcuts for/add shortcuts for things that don't currently have them.
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