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Advantages and disadvantages of GUID / UUID database keys
...all the database keys had been GUID / UUID values. I've considered going down this path a few times, but there's always a bit of uncertainty, especially around performance and un-read-out-over-the-phone-able URLs.
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How do I get SUM function in MySQL to return '0' if no values are found?
...
Thanks Brad. That does the job nicely.
– Nick
Sep 29 '11 at 23:54
1
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Can I disable a CSS :hover effect via JavaScript?
...itself.
You could try the following alternative workaround though. If you don’t mind mucking about in your HTML and CSS a little bit, it saves you having to reset every CSS property manually via JavaScript.
HTML
<body class="nojQuery">
CSS
/* Limit the hover styles in your CSS so that ...
CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
...
Do grep ALLOWED_HOSTS . -ri in your project's head folder to find the correct file. It's settings.py in this case, but grepping is always good advice.
– Harald Nordgren
Apr 14 '16 at 11:...
Class with single method — best approach?
... be filled in as well... Had we created a class with the single purpose of doing what this static method did, we could solve this by taking in the required parameters in the constructor, and allowing the user to set optional values through properties, or methods to set multiple interdependent values...
Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
...e able to help you more if you told as what exactly it is that you want to do.
EDIT:
Systrace would work for your case, but I think that something based on the Linux Security Model like AppArmor or SELinux is a more standard, and thus preferred, alternative, depending on your distribution.
EDIT 2...
JavaScript get clipboard data on paste event (Cross browser)
..., Firefox < 22).
When you need to support older browsers, what you can do is quite involved and a bit of a hack that will work in Firefox 2+, IE 5.5+ and WebKit browsers such as Safari or Chrome. Recent versions of both TinyMCE and CKEditor use this technique:
Detect a ctrl-v / shift-ins event...
Android: How to bind spinner to custom object list?
... your Spinner with android:entries="@array/labels"
When you need a value, do something like this (no, you don't have to chain it):
String selectedVal = getResources().getStringArray(R.array.values)[spinner.getSelectedItemPosition()];
...
What does it mean to start a PHP function with an ampersand?
... use a function to find to
which variable a reference should be
bound. Do not use return-by-reference
to increase performance. The engine
will automatically optimize this on
its own. Only return references when
you have a valid technical reason to
do so.
See Returning References.
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What is a practical use for a closure in JavaScript?
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I've used closures to do things like:
a = (function () {
var privatefunction = function () {
alert('hello');
}
return {
publicfunction : function () {
privatefunction();
}
}
})();
As you can ...