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How to duplicate a whole line in Vim?
...r Y to copy the line (mnemonic: yank)
or
dd to delete the line (Vim copies what you deleted into a clipboard-like "register", like a cut operation)
then
p to paste the copied or deleted text after the current line
or
P to paste the copied or deleted text before the current line
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Modifying the “Path to executable” of a windows service
... Direct registry modification should be avoided (because you can't be sure what else Windows is changing when it modifies the path to exe, f.e.) unless you are absolutely sure what you do.
– lospejos
Jul 22 '16 at 20:19
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Using str_replace so that it only acts on the first match?
...~', which would help avoid the escaping problem to some degree. It depends what the data is, and where it came from.
– ThomasRedstone
Dec 11 '15 at 23:26
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MySQL SELECT only not null values
...es the idx rom the first SELECT come from the idx in the second SELECT ? What does the CASE statement try to accomplish ? What does the second SELECT actually do ? And you are doing an inner join, not a cross join, right ?
– Istiaque Ahmed
Nov 9 '17 at 11:40...
Differences and relationship between glActiveTexture and glBindTexture
From what I gather, glActiveTexture sets the active "texture unit". Each texture unit can have multiple texture targets (usually GL_TEXTURE_1D, 2D, 3D or CUBE_MAP).
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Writing files in Node.js
...e any files into /home/.... Generally that directory is 755 root:wheel (or whatever). If node wants to write a file as jane, it's going to be easier to write to /home/jane/test.txt. Changing /home to something more permissive than 755 is a huge mistake.
– jane arc
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How to read the RGB value of a given pixel in Python?
...to do this which I'm afraid is a separate download.
The easiest way to do what you want is via the load() method on the Image object which returns a pixel access object which you can manipulate like an array:
from PIL import Image
im = Image.open('dead_parrot.jpg') # Can be many different formats...
Can I find events bound on an element with jQuery?
... the dev frame, at the bottom is 'event listeners'.
Expand the tree to see what events are attached to the element. Not sure if this works for events that are handled through bubbling (I'm guessing not)
share
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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
... literal NSArray and NSDictionary instances. They could do something like what they did for literal strings - hardcode the instance layout (for a special subclass) in the compiler and emit data in that layout. Or they could have the compiler emit code that simply creates an instance at runtime.
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Rails server says port already used, how to kill that process?
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Assuming you're looking to kill whatever is on port 3000 (which is what webrick normally uses), type this in your terminal to find out the PID of the process:
$ lsof -wni tcp:3000
Then, use the number in the PID column to kill the process:
$ kill -9 PID...