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SQL WHERE condition is not equal to?
... negated according to the above rules. The negation of this
select *
from foo
where test-1
and test-2
and ( test-3
OR test-4
)
is
select *
from foo
where NOT( test-1
and test-2
and ( test-3
OR test-4
...
How to check if a string contains an element from a list in Python
...er to parse the URL properly - this way you can handle http://.../file.doc?foo and http://.../foo.doc/file.exe correctly.
from urlparse import urlparse
import os
path = urlparse(url_string).path
ext = os.path.splitext(path)[1]
if ext in extensionsToCheck:
print(url_string)
...
How to deal with cyclic dependencies in Node.js
...trollers:
var other_module = require('./other_module');
// Functions:
var foo = function () {
};
// Module exports injects:
module.exports.foo = foo;
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Accessing last x characters of a string in Bash
...
You can use tail:
$ foo="1234567890"
$ echo -n $foo | tail -c 3
890
A somewhat roundabout way to get the last three characters would be to say:
echo $foo | rev | cut -c1-3 | rev
...
Getting the return value of Javascript code in Selenium
... to be able to get the return value of some Javascript code. If I have a foobar() Javascript function in my webpage and I want to call that and get the return value into my Python code, what can I call to do that?
...
Django dynamic model fields
...ontainer(models.Model):
stuff = ListField(EmbeddedModelField())
class FooModel(models.Model):
foo = models.IntegerField()
class BarModel(models.Model):
bar = models.CharField()
...
>>> Container.objects.create(
stuff=[FooModel(foo=42), BarModel(bar='spam')]
)
Django-muta...
Why cast an unused function parameter value to void?
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How to reference a file for variables using Bash?
...
Still not enough. foo=bar unleash_virus can be executed. Note foo=bar\ unleash_virus, foo="bar unleash_virus" and foo=bar #unleash_virus are safe. It's not easy to sanitize properly and not to block some harmless syntax anyway, especially when...
How to reset (clear) form through JavaScript?
...wo options. The first (and fastest) method is to use array notation: $( "#foo" )[ 0 ]; // Equivalent to document.getElementById( "foo" ) The second method is to use the .get() function: $( "#foo" ).get( 0 ); // Identical to above, only slower." learn.jquery.com/using-jquery-core/faq/…
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When to use “ON UPDATE CASCADE”
I use "ON DELETE CASCADE" regularly but I never use "ON UPDATE CASCADE" as I am not so sure in what situation it will be useful.
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