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What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...rs.
char and varchar cannot store Unicode characters.
char and nchar are fixed-length which will reserve storage space for number of characters you specify even if you don't use up all that space.
varchar and nvarchar are variable-length which will only use up spaces for the characters you store. It...
What are static factory methods?
...it. Otherwise, it tries to provide a "spare" connection, failing with an exception if there are none.
public class DbConnection{
private static final int MAX_CONNS = 100;
private static int totalConnections = 0;
private static Set<DbConnection> availableConnections = new HashSet<...
Does Typescript support the ?. operator? (And, what's it called?)
...n.
As far as what to call this operator in CoffeeScript, it's called the existential operator (specifically, the "accessor variant" of the existential operator).
From CoffeeScript's documentation on Operators:
The accessor variant of the existential operator ?. can be used to soak up null refe...
setTimeout in for-loop does not print consecutive values [duplicate]
... of the variable is made. Since the timeout handler is created in the context of that copy, it has its own private "i" to use.
edit — there have been a couple of comments over time in which some confusion was evident over the fact that setting up a few timeouts causes the handlers to all fire at...
Swift - Convert to absolute value
is there any way to get absolute value from an integer?
for example
4 Answers
4
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What is the difference between g++ and gcc?
...1 cc1plus ...) to call depending on the file-type, unless overridden with -x language, they have some differences.
The probably most important difference in their defaults is which libraries they link against automatically.
According to GCC's online documentation link options and how g++ is invoke...
Case insensitive string compare in LINQ-to-SQL
...er or ToLower.
Note the OrdinalIgnoreCase to make it security-safe. But exactly the type of case (in)sensitive check you use depends on what your purposes is. But in general use Equals for equality checks and Compare when you're sorting, and then pick the right StringComparison for the job.
Mich...
What is the difference between Ruby 1.8 and Ruby 1.9
... Ruby (1.8) and the "new" version (1.9). Is there an "easy" or a "simple" explanation of the differences and why it is so different?
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Unit testing of private methods [duplicate]
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If the methods are complex enough to warrant testing in isolation, then refactor them into their own class(es) and test via their public interface(s). Then use them privately in the original class.
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ios app maximum memory budget
...you're using (not SDK), how many applications running in background, what exact memory you're using etc.
Just avoid the instant memory splashes (e.g. you're using 40 Mb of RAM, and then allocating 80 Mb's more for some short computation). In this case iOS would kill your application immediately.
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