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Why is rbindlist “better” than rbind?
I am going through documentation of data.table and also noticed from some of the conversations over here on SO that rbindlist is supposed to be better than rbind .
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How to check if field is null or empty in MySQL?
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end as field1
from tablename
If you only want to check for null and not for empty strings then you can also use ifnull() or coalesce(field1, 'empty'). But that is not suitable for empty strings.
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Why does comparing strings using either '==' or 'is' sometimes produce a different result?
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@AlexanderSupertramp, because of string interning.
– Chris Rico
Feb 1 '15 at 9:34
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Submit jQuery UI dialog on
...n(e) {
if (e.keyCode == $.ui.keyCode.ENTER) {
//Close dialog and/or submit here...
}
});
This'll run no matter what element has the focus in your dialog, which may or may not be a good thing depending on what you want.
If you want to make this the default functionality, you can ...
Python integer division yields float
... answered Aug 15 '09 at 21:51
Brandon E TaylorBrandon E Taylor
23.1k66 gold badges4343 silver badges6868 bronze badges
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Linux/Unix command to determine if process is running?
I need a platform independent (Linux/Unix|OSX) shell/bash command that will determine if a specific process is running. e.g. mysqld , httpd ...
What is the simplest way/command to do this?
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What is the !! (not not) operator in JavaScript?
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This is used to convert truthy values to boolean true, and falsy values too boolean false.
– thetoolman
Jul 16 '12 at 3:53
13
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XML schema or DTD for logback.xml?
...ema or DTD for logback.xml file to have at least the very basic validation and auto-completion in IDEs like IDEA or Eclipse, but I never saw any solution.
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How to preventDefault on anchor tags?
...ATE: I've since changed my mind on this solution. After more development and time spent working on this, I believe a better solution to this problem is to do the following:
<a ng-click="myFunction()">Click Here</a>
And then update your css to have an extra rule:
a[ng-click]{
cu...
DLL and LIB files - what and why?
I know very little about DLL's and LIB's other than that they contain vital code required for a program to run properly - libraries. But why do compilers generate them at all? Wouldn't it be easier to just include all the code in a single executable? And what's the difference between DLL's and LIB's...