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Regular expression that matches valid IPv6 addresses
...]){0,1}[0-9])\.){3,3}
(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]) # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address)
)
# IPv4 RegEx
((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])
To make the above easier to understand, th...
Why does the expression 0 < 0 == 0 return False in Python?
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answered May 20 '11 at 15:25
OmnifariousOmnifarious
49.2k1515 gold badges116116 silver badges172172 bronze badges
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How can I apply a border only inside a table?
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203
If you are doing what I believe you are trying to do, you'll need something a little more like...
How to force R to use a specified factor level as reference in a regression?
... y = 4 + (1.5*x) + rnorm(100, sd = 2),
b = gl(5, 20))
head(DF)
str(DF)
m1 <- lm(y ~ x + b, data = DF)
summary(m1)
Now alter the factor b in DF by use of the relevel() function:
DF <- within(DF, b <- relevel(b, ref = 3))
m2 <- lm(y ~ x + b, data = DF)
summary...
ERROR 2006 (HY000): MySQL server has gone away
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20 Answers
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How to get a value from a cell of a dataframe?
... A B C
0 -0.074172 -0.090626 0.038272
1 -0.128545 0.762088 -0.714816
2 0.201498 -0.734963 0.558397
3 1.563307 -1.186415 0.848246
4 0.205171 0.962514 0.037709
In [17]: df.iat[0,0]
Out[17]: -0.074171888537611502
In [18]: df.at[0,'A']
Out[18]: -0.074171888537611502
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What is the difference between gsub and sub methods for Ruby Strings
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209
The g stands for global, as in replace globally (all):
In irb:
>> "hello".sub('l', '*'...
“Cross origin requests are only supported for HTTP.” error when loading a local file
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Scott StenslandScott Stensland
20.6k99 gold badges7171 silver badges8484 bronze badges
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How to change or add theme to Android Studio?
...ce --> Theme as well.
– tmin
Feb 20 '15 at 22:20
14
Easy, isn't it?! In Eclipse I had to do un...
How can I have ruby logger log output to stdout as well as file?
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20 Answers
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