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What makes Lisp macros so special?
...DSLs). These languages are embedded right into the existing Lisp code. Now, the DSLs can have syntax similar to Lisp (like Peter Norvig's Prolog Interpreter for Common Lisp) or completely different (e.g. Infix Notation Math for Clojure).
Here is a more concrete example:Python has list compreh...
ALTER TABLE without locking the table?
...'ve been using MySQL for so long that I keep forgetting they have triggers now. I've used this technique and now I have a functional hot-alter script. With a progress bar. And it works with MyISAM. Life is good.
– Daniel
Jan 21 '09 at 12:10
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Jackson databind enum case insensitive
...
Thanks, now I can remove all the boilerplate in my POJO :)
– tom91136
Jun 13 '14 at 8:10
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Is there a performance difference between i++ and ++i in C++?
...ent translation units. Compiler with g++ 4.5.
Ignore the style issues for now
// a.cc
#include <ctime>
#include <array>
class Something {
public:
Something& operator++();
Something operator++(int);
private:
std::array<int,PACKET_SIZE> data;
};
int main () {
S...
How do I uniquely identify computers visiting my web site?
... code snippet. This document does not show how to implement it. I want to know how do I implement this so I can track unique users for my site.
– Oliver
Jul 27 '17 at 8:16
12
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Why are Subjects not recommended in .NET Reactive Extensions?
...ppropriate FromEvent method and we are done. To the Pub!
For option 2, we now need to consider how we poll this and how to do this effciently. Also when we get the value, how do we publish it?
I would imagine that you would want a dedicated thread for polling. You wouldn't want some other coder ha...
Static variables in JavaScript
...they can have properties.
For instance, quoting the example given on the (now vanished) article Static variables in Javascript:
function countMyself() {
// Check to see if the counter has been initialized
if ( typeof countMyself.counter == 'undefined' ) {
// It has not... perform t...
NUnit vs. xUnit
... parallel execution is not true. Maybe it was at the time of your post but now it is not. Check this xunit.net/docs/running-tests-in-parallel. It says that test methods in one class will never run parallelly.
– Gondil
Aug 28 '19 at 9:37
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How to use a WSDL file to create a WCF service (not make a call)
...s" in C# (or "your.vb" in VB.NET) which contains all the necessary items.
Now, you need to create a class "MyService" which will implement the service interface (IServiceInterface) - or the several service interfaces - and this is your server instance.
Now a class by itself doesn't really help yet...
Adding external library in Android studio
...
I know it by experience and inspecting.... But there are docs available : developer.android.com/sdk/installing/studio-build.html
– malcubierre
Sep 2 '14 at 6:28
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