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javascript set a variable if undefined
I know that I can test for a javascript variable and then define it if it is undefined, but is there not some way of saying
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How To Format A Block of Code Within a Presentation? [closed]
...lighter:
http://markup.su/highlighter/
or
http://hilite.me/
Just copy and paste into your document.
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raw_input function in Python
... the user (the optional arg of raw_input([arg])), gets input from the user and returns the data input by the user in a string. See the docs for raw_input().
Example:
name = raw_input("What is your name? ")
print "Hello, %s." % name
This differs from input() in that the latter tries to interpret...
PHP abstract properties
...s of data reserved in memory on initialization.
A function on the other hand can be declared (types, name, parameters) without being defined (function body missing) and thus, can be made abstract.
"Abstract" only indicates that something was declared but not defined and therefore before using it,...
SQL NVARCHAR and VARCHAR Limits
...tring containing the dynamic SQL is growing over 4000 chars. Now, I understand that there is a 4000 max set for NVARCHAR(MAX) , but looking at the executed SQL in Server Profiler for the statement
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Location of parenthesis for auto-executing anonymous JavaScript functions?
...ing the current version of json2.js with the version I had in my project and noticed a difference in how the function expression was created and self executed.
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Which is the preferred way to concatenate a string in Python?
...ring to a string variable is to use + or +=. This is because it's readable and fast. They are also just as fast, which one you choose is a matter of taste, the latter one is the most common. Here are timings with the timeit module:
a = a + b:
0.11338996887207031
a += b:
0.11040496826171875
Howeve...
Inserting multiple rows in a single SQL query? [duplicate]
... to insert at once, say 4 rows. My table has three columns: Person , Id and Office .
4 Answers
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List of all special characters that need to be escaped in a regex
...tml
You need to escape any char listed there if you want the regular char and not the special meaning.
As a maybe simpler solution, you can put the template between \Q and \E - everything between them is considered as escaped.
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Unittest setUp/tearDown for several tests
... is fired at the beginning/end of a scenario of tests? The functions setUp and tearDown are fired before/after every single test.
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