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Apply CSS Style to child elements
I want to apply styles only to the table inside the DIV with a particular class:
8 Answers
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How to call an external command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from within a Python script?
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Row Offset in SQL Server
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I would avoid using SELECT *. Specify columns you actually want even though it may be all of them.
SQL Server 2005+
SELECT col1, col2
FROM (
SELECT col1, col2, ROW_NUMBER() OVER (ORDER BY ID) AS RowNum
FROM MyTable
) AS MyDer...
Case-insensitive search in Rails model
...ed behavior. Suppose we have after_create callback in Product model and inside the callback, we have where clause, e.g. products = Product.where(country: 'us'). In this case, the where clauses are chained as callbacks execute within the context of the scope. Just FYI.
– elquimi...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
... the process.
Real is wall clock time - time from start to finish of the call. This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if it is waiting for I/O to complete).
User is the amount of CPU time spent in user-mode code (out...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...ng to bad memory, whereas the latter doesn't retain the object and automatically sets itself to nil when its target is deallocated. Of the two, __weak is generally preferred on platforms that support it.
You would use these qualifiers for things like delegates, where you don't want the object to r...
What is the explicit promise construction antipattern and how do I avoid it?
...objects when you are converting an API to promises and can't do it automatically, or when you're writing aggregation functions that are easier expressed this way.
Quoting Esailija:
This is the most common anti-pattern. It is easy to fall into this when you don't really understand promises and ...
What and where are the stack and heap?
... set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is always...
Mocking vs. Spying in mocking frameworks
...eate spies of real objects. When you use the spy then the real methods are called (unless a method was stubbed).
Real spies should be used carefully and occasionally, for example when dealing with legacy code.
When in doubt, use mocks.
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Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?
...ropriate documentation be useful here? For example, Scala's StringOps (basically a class of "extension methods" for Java's String) has a method parition(Char => Boolean): (String, String) (takes in predicate, returns tuple of 2 strings). It's obvious what the output is (obviously one is going to ...