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Maximum length of the textual representation of an IPv6 address?
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45 characters.
You might expect an address to be
0000:0000:0000:0000:0000:0000:0000:0000
8 * 4 + 7 = 39
8 groups of 4 digits with 7 : between them.
But if you have an IPv4-mapped IPv6 address, the last two groups can be written in base 10 separated by ., eg. [::ffff...
How to do a recursive find/replace of a string with awk or sed?
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find /home/www \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/subdomainA\.example\.com/subdomainB.example.com/g'
-print0 tells find to print each of the results separated by a null character, rather than a new line. In the unlikely event that your directory has ...
Display an array in a readable/hierarchical format
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Try this:
foreach($data[0] as $child) {
echo $child . "\n";
}
in place of print_r($data)
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How to remove line breaks (no characters!) from the string?
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10 Answers
10
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How to make an empty div take space
This is my 960 grid system case:
12 Answers
12
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Python equivalent of D3.js
...cript and want to serve this up forever
with d3py.NetworkXFigure(G, width=500, height=500) as p:
p += d3py.ForceLayout()
p.show()
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Memory address of variables in Java
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edited May 18 '17 at 20:11
Socowi
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answered D...
Saving an Object (Data persistence)
...pen('company_data.pkl', 'wb') as output:
company1 = Company('banana', 40)
pickle.dump(company1, output, pickle.HIGHEST_PROTOCOL)
company2 = Company('spam', 42)
pickle.dump(company2, output, pickle.HIGHEST_PROTOCOL)
del company1
del company2
with open('company_data.pkl', 'rb') as i...
String.format() to format double in java
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answered Feb 3 '11 at 11:04
David TangDavid Tang
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