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How to subtract X days from a date using Java calendar?
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How to return smart pointers (shared_ptr), by reference or by value?
... names.
As functional programmers like to remind us, mutation makes code more complex to reason about by undermining referential transparency and equational reasoning.
We no longer have strict value semantics for names.
But is it really necessary to mess up our code in this way to gain e...
Determine the number of lines within a text file
... write:
var lineCount = File.ReadAllLines(@"C:\file.txt").Length;
For a more efficient method you could do:
var lineCount = 0;
using (var reader = File.OpenText(@"C:\file.txt"))
{
while (reader.ReadLine() != null)
{
lineCount++;
}
}
Edit: In response to questions about effi...
How do you use bcrypt for hashing passwords in PHP?
...s crypt(), which calls the POSIX crypt() function. All the code above does more is generating a random salt (which doesn't have to be cryptographically secure, the salt isn't considered a secret) before calling crypt(). Maybe you should do a little research yourself before calling wolf.
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What is the difference between JDK and JRE?
...and needs to use the JDK to compile the servlets. I am sure that there are more examples.
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What are the differences between virtual memory and physical memory?
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Python append() vs. + operator on lists, why do these give different results?
...ppended to the array on lh side", but personally find the current behavior more sensible).
– Abel
Jan 7 '10 at 18:19
i...
Update R using RStudio
...o, go to :Tools -> options -> General.
Check @micstr's answer for a more detailed walkthrough.
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How to get distinct values for non-key column fields in Laravel?
...ou should use distinct. In MySQL you can use DISTINCT for a column and add more columns to the resultset: "SELECT DISTINCT name, id, email FROM users". With eloquent you can do this with $this->select(['name', 'id', 'email'])->distinct()->get();
– Sergi
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SQL Call Stored Procedure for each Row without using a cursor
...E CustomerID > @CustomerId
ORDER BY CustomerID
-- Exit loop if no more customers
IF @@ROWCOUNT = 0 BREAK;
-- call your sproc
EXEC dbo.YOURSPROC @CustomerId
END
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