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Extract a dplyr tbl column as a vector
...2 3.62 3.54 4.11
A nice way to do this in v0.2 of dplyr:
iris2 %>% select(Species) %>% collect %>% .[[5]]
Or if you prefer:
iris2 %>% select(Species) %>% collect %>% .[["Species"]]
Or if your table isn't too big, simply...
iris2 %>% collect %>% .[["Species"]]
...
What does “while True” mean in Python?
...the while statement is going to be evaluated as a boolean. Meaning it gets converted into either true or false.
Consider in the statement while(6 > 5)
It first evaluates the expression 6 > 5 which is true so is the same as saying while(true)
Anything that is not FALSE, 0, an emptry string ...
How to paste over without overwriting register
Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register?
...
Array to Hash Ruby
... @tester, the * is called the splat operator. It takes an array and converts it a literal list of items. So *[1,2,3,4] => 1, 2, 3, 4. In this example, the above is equivalent to doing Hash["item 1", "item 2", "item 3", "item 4"]. And Hash has a [] method that accepts a list of arguments (m...
How do we count rows using older versions of Hibernate (~2009)?
...eturn int and use this form:
int count = ((Long)getSession().createQuery("select count(*) from Book").uniqueResult()).intValue();
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Why is a round-trip conversion via a string not safe for a double?
...ng .NET 4.5.1 (x64), running the following console app which uses my DoubleConverter class.DoubleConverter.ToExactString shows the exact value represented by a double:
using System;
class Test
{
static void Main()
{
double d1 = 0.84551240822557006;
string s = d1.ToString("r...
Make Visual Studio understand CamelCase when hitting Ctrl and cursor keys
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Is there an option, to select the whole word, even if CameHumps is on? At the moment I have to press right or left several times to select a word. I hope you get me.
– Ozkan
Oct 7 '16 at 14:01
...
Passing a method as a parameter in Ruby
...ng. It's worth noting that you call method( :<name> ) just once when converting your method name to a callable symbol. You can store that result in a variable or a parameter and keep passing it to child functions like any other variable from then on...
– user1115652
...
Batch file include external file for variables
...off
rem Empty the variable to be ready for label config_all
set config_all_selected=
rem Go to the label with the parameter you selected
goto :config_%1
REM This next line is just to go to end of file
REM in case that the parameter %1 is not set
goto :end
REM next label is to jump here and get a...
Utilizing the GPU with c# [closed]
...ths ago or so, and did get it working though it took a little bit of work. Converts C# kernel code to cuda at compile time. Unfortunately their website has been down and their github hasn't been updated for a couple of years, which might indicate the project is dead....
Cudafy - Open source and very...