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Use '=' or LIKE to compare strings in SQL?
There's the (almost religious) discussion, if you should use LIKE or '=' to compare strings in SQL statements.
9 Answers
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Getting file size in Python? [duplicate]
Is there a built-in function for getting the size of a file object in bytes? I see some people do something like this:
5 An...
Python Sets vs Lists
In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower than a Python list?
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Service vs IntentService in the Android platform
...e used in tasks with no UI, but shouldn't be too long. If you need to perform long tasks, you must use threads within Service.
The IntentService can be used in long tasks usually with no communication to Main Thread. If communication is required, can use Main Thread handler or broadcast intents. A...
Validate phone number with JavaScript
I found this code in some website, and it works perfectly. It validates that the phone number is in one of these formats:
(123) 456-7890 or 123-456-7890
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What is meant by 'first class object'?
...ikipedia:
In computer science, a programming
language is said to support
first-class functions (or function
literal) if it treats functions as
first-class objects. Specifically,
this means that the language supports
constructing new functions during the
execution of a program, stor...
How do I see all foreign keys to a table or column?
In MySQL, how do I get a list of all foreign key constraints pointing to a particular table? a particular column? This is the same thing as this Oracle question , but for MySQL.
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When to use nil, blank, empty? [duplicate]
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nil? - checks to see if variable is referencing an object or not
empty? - may be used to check on various object types like empty string "" or empty array []
blank? - checks for nil? or empty?.
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g++ undefined reference to typeinfo
I just ran across the following error (and found the solution online, but it's not present in Stack Overflow):
17 Answers
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Ruby optional parameters
... gotcha with this method: e.g. If you're trying to make the default value for scope true and you pass in false, scope ||= true won't work. It evaluates the same as nil and will set it to true
– Joshua Pinter
Nov 10 '11 at 5:32
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