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Combine two or more columns in a dataframe into a new column with a new name
For example if I have this:
8 Answers
8
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EOFError: end of file reached issue with Net::HTTP
....8.7-p302/Rails 2.3.11. I am trying to use FQL (Facebook API) to get stats for a link. Here's my code:
7 Answers
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AngularJS Directive Restrict A vs E
...creating a component that is in control of the template. The
common case for this is when you are creating a Domain-Specific
Language for parts of your template. Use an attribute when you are
decorating an existing element with new functionality.
Edit following comment on pitfalls for a comp...
Deleting all files in a directory with Python
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Via os.listdir and os.remove:
import os
filelist = [ f for f in os.listdir(mydir) if f.endswith(".bak") ]
for f in filelist:
os.remove(os.path.join(mydir, f))
Or via glob.glob:
import glob, os, os.path
filelist = glob.glob(os.path.join(mydir, "*.bak"))
for f in filelist:
...
How to pass arguments from command line to gradle
...dle-application-plugin-question-td5539555.html but the code does not work for me (perhaps it is not meant for JavaExec?). Here is what I tried:
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php - get numeric index of associative array
...s you use a sort function. Not sure what sort of guarantee you're looking for, but it's not like the JavaScript model where there is no static order to associative arrays.
– Fosco
May 1 '12 at 23:20
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Visual Studio immediate window command for Clear All
...DN article lists all predefined aliases and you can define your own, too. (For VS 2010 and earlier, custom aliases are described in a separate article, though.) Scanning through, there's a whole slew of them, some of which might even have their roots in MS-DOS DEBUG.EXE (specifically >d, >g, &...
Create web service proxy in Visual Studio from a WSDL file
...fly, and a bunch of methods that you can call. It'll also generate classes for all/any complex objects passed across the service interface.
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Remove ':hover' CSS behavior from element
I have CSS that changes formatting when you hover over an element.
6 Answers
6
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How to use null in switch
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This is not possible with a switch statement in Java. Check for null before the switch:
if (i == null) {
doSomething0();
} else {
switch (i) {
case 1:
// ...
break;
}
}
You can't use arbitrary objects in switch statements*. The reason that the compil...