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Regular Expressions: Is there an AND operator?
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edited Jan 22 '09 at 20:57
answered Jan 22 '09 at 16:58
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Edit and Continue: “Changes are not allowed when…”
Even if I create a clean WinForms project, Edit and Continue doesn't work and gives me the error:
36 Answers
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Getting started with Haskell
...up to an expert. Note that this process will take many months (years?), so it is rather long.
Absolute Beginner
Firstly, Haskell is capable of anything, with enough skill. It is very fast (behind only C and C++ in my experience), and can be used for anything from simulations to servers, guis and web...
When is it better to use String.Format vs string concatenation?
...code that is parsing an index value to determine a cell input into Excel. It's got me thinking...
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
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When last I tried to do this there was no official way to do it. I resorted to using the function that find and its friends use to generate their queries directly. It is private API so there is a huge risk that Rails 3 will totally break it, but for debugging, it is an ok solution.
Th...
Am I immoral for using a variable name that differs from its type only by case?
... the reasoning of those telling you this is bad? I do this all the time. It is the simplest, expressive way to name a single variable of a type. If you needed two Person objects then you could prefix person with meaningful adjectives like
fastPerson
slowPerson
otherwise just
person
is fine ...
Direct casting vs 'as' operator?
...to s if o is not a string or if o is null. For this reason, you cannot use it with value types (the operator could never return null in that case). Otherwise, assigns o to s.
string s = o.ToString(); // 3
Causes a NullReferenceException if o is null. Assigns whatever o.ToString() returns to s, no...
How to identify server IP address in PHP
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edited Sep 14 '16 at 13:04
David De Sloovere
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Should I implement __ne__ in terms of __eq__ in Python?
I have a class where I want to override the __eq__ method. It seems to make sense that I should override the __ne__ method as well, but does it make sense to implement __ne__ in terms of __eq__ as such?
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What is Scala's yield?
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It is used in sequence comprehensions (like Python's list-comprehensions and generators, where you may use yield too).
It is applied in combination with for and writes a new element into the resulting sequence.
Simple examp...