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What does “@@ -1 +1 @@” mean in Git's diff output?
...time
+++ to-file to-file-modification-time
The time stamp looks like 2002-02-21 23:30:39.942229878 -0800 to indicate the date, time with fractional seconds, and time zone. The fractional seconds are omitted on hosts that do not support fractional time stamps.
You can change the header's c...
Associativity of “in” in Python?
...
123
1 in [] in 'a' is evaluated as (1 in []) and ([] in 'a').
Since the first condition (1 in [])...
Python argparse: default value or specified value
...
286
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--example', nargs='?',...
Best way to make Java's modulus behave like it should with negative numbers?
...
Maarten Bodewes
76.4k1212 gold badges114114 silver badges213213 bronze badges
answered Dec 10 '10 at 18:46
Peter LawreyPete...
How to loop through all but the last item of a list?
...
324
for x in y[:-1]
If y is a generator, then the above will not work.
...
Getting the count of unique values in a column in bash
... see a frequency count for column two (for example):
awk -F '\t' '{print $2}' * | sort | uniq -c | sort -nr
fileA.txt
z z a
a b c
w d e
fileB.txt
t r e
z d a
a g c
fileC.txt
z r a
v d c
a m c
Result:
3 d
2 r
1 z
1 m
1 g
1...
How to change a command line argument in Bash?
...
2 Answers
2
Active
...
How to define different dependencies for different product flavors
... }
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
}
}
apply plugin: 'com.android.application'
repositories {
mavenCentral()
}
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
minSdkVersion 10
targetSdkVersi...
How can I make pandas dataframe column headers all lowercase?
...e(3,0,-1), 'C':list('abc')})
>>> data
A B C
0 0 3 a
1 1 2 b
2 2 1 c
>>> data.columns = map(str.lower, data.columns)
>>> data
a b c
0 0 3 a
1 1 2 b
2 2 1 c
share
...
What is the difference between Ruby 1.8 and Ruby 1.9
..."cat"[1]
=> 97
{"a","b"} No Longer Supported
Ruby 1.9
irb(main):002:0> {1,2}
SyntaxError: (irb):2: syntax error, unexpected ',', expecting tASSOC
Ruby 1.8.6
irb(main):001:0> {1,2}
=> {1=>2}
Action: Convert to {1 => 2}
Array.to_s Now Contains Punctuation
Ruby 1.9
irb...