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How to change column datatype from character to numeric in PostgreSQL 8.4
...ending on your data):
alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard casting...
alter table presales alter column code type numeric(10,0) using cast(code as numeric);
This will fail if you have anything in code that cannot be cast to nu...
binning data in python with scipy/numpy
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184
It's probably faster and easier to use numpy.digitize():
import numpy
data = numpy.random.ran...
Error during SSL Handshake with remote server
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271
The comment by MK pointed me in the right direction.
In the case of Apache 2.4 and up, there ar...
How can you use an object's property in a double-quoted string?
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166
When you enclose a variable name in a double-quoted string it will be replaced by that variabl...
Format an Integer using Java String Format
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173
Use %03d in the format specifier for the integer. The 0 means that the number will be zero-fil...
How do I extract a sub-hash from a hash?
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16 Answers
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ipython notebook clear cell output in code
...utput of a cell.
from IPython.display import clear_output
for i in range(10):
clear_output(wait=True)
print("Hello World!")
At the end of this loop you will only see one Hello World!.
Without a code example it's not easy to give you working code. Probably buffering the latest n events i...
What is the difference between gsub and sub methods for Ruby Strings
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answered Jul 20 '11 at 18:48
Ray ToalRay Toal
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What is the purpose of the EBP frame pointer register?
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102
Frame pointer is a reference pointer allowing a debugger to know where local variable or an ar...
How do I convert an interval into a number of hours with postgres?
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321
Probably the easiest way is:
SELECT EXTRACT(epoch FROM my_interval)/3600
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