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Printf width specifier to maintain precision of floating-point value
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93
I recommend @Jens Gustedt hexadecimal solution: use %a.
OP wants “print with maximum precisio...
MySQL remove all whitespaces from the entire column
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203
To replace all spaces :
UPDATE `table` SET `col_name` = REPLACE(`col_name`, ' ', '')
To remov...
How to read a file in reverse order?
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73
for line in reversed(open("filename").readlines()):
print line.rstrip()
And in Python 3:
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Finding the PHP File (at run time) where a Class was Defined
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3 Answers
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Set default value of an integer column SQLite
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3 Answers
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How to include external Python code to use in other files?
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153
You will need to import the other file as a module like this:
import Math
If you don't want t...
Base64: What is the worst possible increase in space usage?
...the size of the base-64 representation of a string of size n is:
ceil(n / 3) * 4
So, for a 16kB array, the base-64 representation will be ceil(16*1024/3)*4 = 21848 bytes long ~= 21.8kB.
A rough approximation would be that the size of the data is increased to 4/3 of the original.
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Which terminal command to get just IP address and nothing else?
...127.0.0.1 | cut -d\ -f2
Or for linux system
hostname -i | awk '{print $3}' # Ubuntu
hostname -i # Debian
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How to get first N elements of a list in C#?
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739
var firstFiveItems = myList.Take(5);
Or to slice:
var secondFiveItems = myList.Skip(5).Take(...