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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...e case. :-) "be" is probably a helper object, to make syntax prettier. Or, more specifically, to enable use of the infix notation with "must".
– Daniel C. Sobral
Jul 25 '09 at 13:52
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Storing images in SQL Server?
...ically below 256KB in size, storing them in a database VARBINARY column is more efficient
if your pictures or document are typically over 1 MB in size, storing them in the filesystem is more efficient (and with SQL Server 2008's FILESTREAM attribute, they're still under transactional control and par...
What are the key differences between Scala and Groovy? [closed]
...uff you can do in Java. Note, Scala's static type system is substantially more uniform and sophisticated than Java's.
Groovy is syntactically influenced by Java but semantically influenced more by languages like Ruby.
Scala is syntactically influenced by both Ruby and Java. It is semantically in...
How to select the first element with a specific attribute using XPath
...store/book[@location='US'][1] works only with simple structure.
Add a bit more structure and things break.
With
<bookstore>
<category>
<book location="US">A1</book>
<book location="FIN">A2</book>
</category>
<category>
<book location="FI...
Convert column classes in data.table
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What does a tilde do when it precedes an expression?
... If you profiled your application and found a bottleneck, it could be made more performant by using bitwise tricks (as one possible tool in a much bigger bag).
It's also a (generally) unclear trick to turn indexOf()'s found return value into truthy (while making not found as falsy) and people often...
What is the difference between Lisp-1 and Lisp-2?
...
Isn't a Lisp-2 more confusing having functions and variables with the same names then?
– appshare.co
Jan 2 '11 at 15:43
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What are “named tuples” in Python?
...((pt1[0]-pt2[0])**2 + (pt1[1]-pt2[1])**2)
Using a named tuple it becomes more readable:
from collections import namedtuple
Point = namedtuple('Point', 'x y')
pt1 = Point(1.0, 5.0)
pt2 = Point(2.5, 1.5)
from math import sqrt
line_length = sqrt((pt1.x-pt2.x)**2 + (pt1.y-pt2.y)**2)
However, named...
How do I check if an object has a specific property in JavaScript?
... - 2.0.1 and older - but those versions of the browser are rarely used any more.)
If what you're looking for is if an object has a property on it that is iterable (when you iterate over the properties of the object, it will appear) then doing: prop in object will give you your desired effect.
Sinc...
What are the primary differences between Haskell and F#? [closed]
...ork.
Listen to the Software Engineering radio with Simon Peyton Jones for more info on Haskell: Episode 108: Simon Peyton Jones on Functional Programming and Haskell
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