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Declaring a default constraint when creating a table
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I have used square brackets rather than quotes as many readers won't work with QUOTED_IDENTIFIERS on by default.
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Converting from Integer, to BigInteger
..., to BigInteger. I tried typecasting the Integer variable, but i get an error that says inconvertible type.
2 Answers
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_DEBUG vs NDEBUG
Which preprocessor define should be used to specify debug sections of code?
6 Answers
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What is a “thread” (really)?
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A thread is an independent set of values for the processor registers (for a single core). Since this includes the Instruction Pointer (aka Program Counter), it controls what executes in what order. It also includes the Stack Pointer, which had better point to a uni...
How do I pipe a subprocess call to a text file?
...rgument of subprocess.call.
It takes None, subprocess.PIPE, a file object or a file descriptor. The first is the default, stdout is inherited from the parent (your script). The second allows you to pipe from one command/process to another. The third and fourth are what you want, to have the output ...
Python to print out status bar and percentage
... go with one of the other answers.
A simple example of how to use it:
import progressbar
from time import sleep
bar = progressbar.ProgressBar(maxval=20, \
widgets=[progressbar.Bar('=', '[', ']'), ' ', progressbar.Percentage()])
bar.start()
for i in xrange(20):
bar.update(i+1)
sleep(0.1...
What is the relation between BLAS, LAPACK and ATLAS
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BLAS is a collection of low-level matrix and vector arithmetic operations (“multiply a vector by a scalar”, “multiply two matrices and add to a third matrix”, etc ...).
LAPACK is a collection of higher-level linear algebra operations. Things like matrix factorizat...
Set Django IntegerField by choices=… name
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Do as seen here. Then you can use a word that represents the proper integer.
Like so:
LOW = 0
NORMAL = 1
HIGH = 2
STATUS_CHOICES = (
(LOW, 'Low'),
(NORMAL, 'Normal'),
(HIGH, 'High'),
)
Then they are still integers in the DB.
Usage would be thing...
Node.js / Express.js - How does app.router work?
Before I ask about app.router I think I should explain at least what I think happens when working with middleware. To use middleware, the function to use is app.use() . When the middleware is being executed, it will either call the next middleware by using next() or make it so no more middlewar...
How do I view 'git diff' output with my preferred diff tool/ viewer?
...er, the variable is supposed to point to the full path of the executable. Moreover, the executable specified by GIT_EXTERNAL_DIFF will be called with a fixed set of 7 arguments:
path old-file old-hex old-mode new-file new-hex new-mode
As most diff tools will require a different order (and only so...