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Matching a space in regex
...X is the physical tab character (and each is preceded by a single space in all those examples).
These will work in every* regex engine I've ever seen (some of which don't even have the one-or-more "+" character, ugh).
If you know you'll be using one of the more modern regex engines, "\s" and its v...
Get the current file name in gulp.src()
In my gulp.js file I'm streaming all HTML files from the examples folder into the build folder.
6 Answers
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Calling a static method on a generic type parameter
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In this case you should just call the static method on the constrainted type directly. C# (and the CLR) do not support virtual static methods. So:
T.StaticMethodOnSomeBaseClassThatReturnsCollection
...can be no different than:
SomeBaseClass.StaticMet...
Select DISTINCT individual columns in django?
...g note in the docs about using distinct(). The above example will work but all combinations of distinct() and values() may not.
PS: it is a good idea to use lower case names for fields in a model. In your case this would mean rewriting your model as shown below:
class ProductOrder(models.Model):
...
Use email address as primary key?
...u store is going to take up space in RAM.
– Jonathan Allen
Mar 11 '15 at 8:40
In case any one wonders, as I did, a GUI...
How do I embed a single file from a GitHub gist with the new gist interface?
...tHub Gist interface has one embed snippet for the entire gist which embeds all files in the gist. The old interface had embed code for each file in the gist. Anyone know if there's a trick to embed a single file?
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Turning multi-line string into single comma-separated
... awk: invalid -v option :(
– Marsellus Wallace
Jun 15 '15 at 17:38
6
Add a space bet...
Git-Based Source Control in the Enterprise: Suggested Tools and Practices?
...u can do branches
in Subversion, but the fact that they
are visible to all discourages people
from opening up a branch for
experimental work. Similarly a DVCS
encourages check-pointing of work:
committing incomplete changes, that
may not even compile or pass tests, to
your local repo...
Designing function f(f(n)) == -n
...turn n - 1
else:
return -1 * (n + 1)
Python automatically promotes integers to arbitrary length longs. In other languages the largest positive integer will overflow, so it will work for all integers except that one.
To make it work for real numbers you need to replace the n ...
Why do we need break after case statements?
Why doesn't the compiler automatically put break statements after each code block in the switch? Is it for historical reasons? When would you want multiple code blocks to execute?
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