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What does Expression.Quote() do that Expression.Constant() can’t already do?
...e quote operator is an operator which induces closure semantics on its operand. Constants are just values.
Quotes and constants have different meanings and therefore have different representations in an expression tree. Having the same representation for two very different things is extremely confu...
C default arguments
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Not really. The only way would be to write a varargs function and manually fill in default values for arguments which the caller doesn't pass.
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How to randomly select rows in SQL?
... 2005. In my db, I have a table "customerNames" which has two columns "Id" and "Name" and approx. 1,000 results.
11 Answer...
How can I check whether an array is null / empty?
I have an int array which has no elements and I'm trying to check whether it's empty.
13 Answers
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Calculate the number of business days between two dates?
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I've had such a task before and I've got the solution.
I would avoid enumerating all days in between when it's avoidable, which is the case here. I don't even mention creating a bunch of DateTime instances, as I saw in one of the answers above. This is ...
Text Progress Bar in the Console [closed]
I wrote a simple console app to upload and download files from an FTP server using the ftplib.
31 Answers
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How to get Locale from its String representation in Java?
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You're right. There still needs to be some way to convert the existing Locale representations to BCP47 format. My intention was to suggest that going forward, Locales should not be stored in their toString form, but in their toLanguageTag form, which is convertible back to a...
Cannot use ref or out parameter in lambda expressions
...ld need to be visible on the ref parameter itself. Both within the method and in the caller.
These are somewhat incompatible properties and are one of the reasons they are disallowed in lambda expressions.
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Catch Ctrl-C in C
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With a signal handler.
Here is a simple example flipping a bool used in main():
#include <signal.h>
static volatile int keepRunning = 1;
void intHandler(int dummy) {
keepRunning = 0;
}
// ...
int main(void) {
signal(SIG...
How do I explicitly instantiate a template function?
...T] There seems to be (a lot) of confusion regarding explicit instantiation and specialization.
The code I posted above deals with explicit instantiation. The syntax for specialization is different.
Here is syntax for specialization:
template <typename T> void func(T param) {} // definition
t...