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How can I output leading zeros in Ruby?
...counter is known (e.g., n = 3 for counters 1..876), you can do
str = "file_" + i.to_s.rjust(n, "0")
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CGContextDrawImage draws image upside down when passed UIImage.CGImage
...answered Feb 6 '09 at 20:46
Kendall Helmstetter GelnerKendall Helmstetter Gelner
72.5k2626 gold badges123123 silver badges146146 bronze badges
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Android: When is onCreateOptionsMenu called during Activity lifecycle?
...finishes onCreateOptionsMenu is called.
That will be true on devices and apps with an official Honeycomb-style action bar. If there is no action bar, onCreateOptionsMenu() should not get called until the user calls up the menu, typically by pressing the MENU button.
(I'm using screen size to d...
Stored procedure slow when called from web, fast from Management Studio
I have stored procedure that insanely times out every single time it's called from the web application.
7 Answers
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Reading binary file and looping over each byte
...hile byte != "":
# Do stuff with byte.
byte = f.read(1)
finally:
f.close()
Python 2.5-2.7
with open("myfile", "rb") as f:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
Note that the with statement is not available in versio...
How to get Ruby / Homebrew / RVM to work on Yosemite?
After installing Yosemite, I was unable to run brew or ruby.
11 Answers
11
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How do I ignore files in a directory in Git?
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This is actually a copy-paste from the git documentation
– mcont
Aug 17 '18 at 10:00
1
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Python: fastest way to create a list of n lists
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The probably only way which is marginally faster than
d = [[] for x in xrange(n)]
is
from itertools import repeat
d = [[] for i in repeat(None, n)]
It does not have to create a new int object in every iteration and is about 15 % faster on my machine.
Edi...
Find intersection of two nested lists?
... 3 filter returns an iterable instead of list, so you need to wrap filter calls with list():
c3 = [list(filter(lambda x: x in c1, sublist)) for sublist in c2]
Explanation:
The filter part takes each sublist's item and checks to see if it is in the source list c1.
The list comprehension is exec...
Execute another jar in a Java program
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.jar isn't executable. Instantiate classes or make call to any static method.
EDIT:
Add Main-Class entry while creating a JAR.
>p.mf (content of p.mf)
Main-Class: pk.Test
>Test.java
package pk;
public class Test{
public static void main(String []args){
Sys...