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What is the reason not to use select *?
...f that column is removed from the table and the query is executed.
You can more easily scan code where that column is being used.
You should always write queries to bring back the least amount of information.
As others mention if you use ordinal column access you should never use select *
If your SQ...
In Javascript, how to conditionally add a member to an object?
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In pure Javascript, I cannot think of anything more idiomatic than your first code snippet.
If, however, using the jQuery library is not out of the question, then $.extend() should meet your requirements because, as the documentation says:
Undefined properties are no...
What are the relative strengths and weaknesses of Git, Mercurial, and Bazaar? [closed]
...available for all revisions, tree-local revnos (standard revision numbers, more akin to those used by svn or other more conventional SCMs) are used in place of content hashes for identifying revisions. Bazaar has support for "lightweight checkouts", in which history is kept on a remote server instea...
How can I use goto in Javascript?
...onsole.log("Hello, world!");
i++;
if(i < 538) goto start;
You can read more about how goto is implemented, but basically, it does some JavaScript preprocessing that takes advantage of the fact that you can simulate a goto with a labelled while loop. So, when you write the "Hello, world!" program...
Iterating over every two elements in a list
...a)
for x, y in pairwise(l):
print "%d + %d = %d" % (x, y, x + y)
Or, more generally:
from itertools import izip
def grouped(iterable, n):
"s -> (s0,s1,s2,...sn-1), (sn,sn+1,sn+2,...s2n-1), (s2n,s2n+1,s2n+2,...s3n-1), ..."
return izip(*[iter(iterable)]*n)
for x, y in grouped(l, 2)...
List comprehension: Returning two (or more) items for each item
Is it possible to return 2 (or more) items for each item in a list comprehension?
6 Answers
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How can I find the current OS in Python? [duplicate]
...ther unixes, and OS X, while os.name is "posix" for all of them.
For much more detailed information, use the platform module. This has cross-platform functions that will give you information on the machine architecture, OS and OS version, version of Python, etc. Also it has os-specific functions to...
When should I use a struct rather than a class in C#?
...e on the basis that it's an internal type only, performance was considered more important than semantics, or some other excuse. My point is that a type like Rectangle should have its contents exposed as individually-editable fields not "because" the performance benefits outweigh the resulting seman...
How is the default max Java heap size determined?
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Preventing Laravel adding multiple records to a pivot table
...during an attempt of saving a doublet.
You should also take a look at the more straightforward answer from Barryvdh just below.
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