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How to sort a dataframe by multiple column(s)
...as speedy as the base R commands with their convoluted machinations. Typically brilliant Hadley Wickham work. My only gripe with it is that it breaks the standard R nomenclature where sorting objects get called by sort(object), but I understand why Hadley did it that way due to issues discussed in...
Eclipse error: “The import XXX cannot be resolved”
...ean also worked for me. What exactly happens (everything just went bonkers all of a sudden) and how does Clean help?
– Sabre Runner
Sep 22 '13 at 12:31
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SQLite: How do I save the result of a query as a CSV file?
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All the existing answers only work from the sqlite command line, which isn't ideal if you'd like to build a reusable script. Python makes it easy to build a script that can be executed programatically.
import pandas as pd
im...
character showing up in files. How to remove them?
...for removing <fffe> character at the beginning of a line, to replace all <fffe> characters in a line: 's/\x{fffe}//g'.
– Diego Pino
Dec 26 '11 at 9:21
2
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MySQL: determine which database is selected?
After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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Using an ORM or plain SQL? [closed]
...d ORMs in python like SQLAlchemy , I didn't stick with them for long. Usually it was either the documentation or complexity (from my point of view) holding me back.
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When to use reinterpret_cast?
...time hence the word static . This is the cast the C++ compiler uses internally for implicit casts also.
11 Answers
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jQuery Ajax POST example with PHP
...me local variables
var $form = $(this);
// Let's select and cache all the fields
var $inputs = $form.find("input, select, button, textarea");
// Serialize the data in the form
var serializedData = $form.serialize();
// Let's disable the inputs for the duration of the Ajax ...
Call a function with argument list in python
I'm trying to call a function inside another function in python, but can't find the right syntax. What I want to do is something like this:
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What's a “static method” in C#?
... 1; }
public static int StaticMethod() { return 42; }
}
In order to call InstanceMethod, you need an instance of the class:
SomeClass instance = new SomeClass();
instance.InstanceMethod(); //Fine
instance.StaticMethod(); //Won't compile
SomeClass.InstanceMethod(); //Won't compile
Some...