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What does it mean to “program to an interface”?
...
Using interfaces is a key factor in making your code easily testable in addition to removing unnecessary couplings between your classes. By creating an interface that defines the operations on your class, you allow classes that want to use that functionality the ability to use it wit...
“X-UA-Compatible” content=“IE=9; IE=8; IE=7; IE=EDGE”
...equiv="X-UA-Compatible" content="IE=8" />
This allows for much easier testing and maintenance. Although generally the more useful version of this is using Emulate:
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" />
For this:
<meta http-equiv="X-UA-Compatible" content="IE...
Is it possible to send a variable number of arguments to a JavaScript function?
...eful to you, that you can know how many arguments a function expects:
var test = function (one, two, three) {};
test.length == 3;
But anyway you can pass an arbitrary number of arguments...
The spread syntax is shorter and "sweeter" than apply and if you don't need to set the this value in the ...
How to write loop in a Makefile?
...pe platform.
for number in 1 2 3 4 ; do \
./a.out $$number ; \
done
Test as follows:
target:
for number in 1 2 3 4 ; do \
echo $$number ; \
done
produces:
1
2
3
4
For bigger ranges, use:
target:
number=1 ; while [[ $$number -le 10 ]] ; do \
echo $$number ; \...
How do you kill all current connections to a SQL Server 2005 database?
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ALTER DATABASE [Test]
SET OFFLINE WITH ROLLBACK IMMEDIATE
ALTER DATABASE [Test]
SET ONLINE
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How can I install Apache Ant on Mac OS X?
...lled on some older versions of Mac OS X, so you should run ant -version to test if it is installed before attempting to install it.
If it is not already installed, then your best bet is to install Homebrew (brew install ant) or MacPorts (sudo port install apache-ant), and use those tools to instal...
Nodemailer with Gmail and NodeJS
...sender address
to: 'true@true.com', // list of receivers
subject: 'test mail', // Subject line
html: '<h1>this is a test mail.</h1>'// plain text body
};
transporter.sendMail(mailOptions, function (err, info) {
if(err)
console.log(err)
else
console.lo...
Check for column name in a SqlDataReader object
...the way back in 2006. stackoverflow.com/a/891230/852208. Further without testing, it's possible that this code is actually slower with it's average case checking half of all columns (though still trivial in a db connected app). I would edit this answer to only include the middle paragraph as the ...
Pass Nothing from Javascript to VBScript in IE9
...on getting a better job!)
I don't have access to IE right now, so I can't test this, but what if you tried writing a function like this:
<script type="text/vbscript">
Function CallWithNulls(fn, arg1, arg2, arg3)
If (isNull(arg1)) arg1 = Nothing
If (isNull(arg2)) arg2 = Nothing
...
Can virtual functions have default parameters?
...oo(int i = 2) { cout << "B::foo" << i << endl; }
};
void test() {
A a;
B b;
A* ap = &b;
a.foo();
b.foo();
ap->foo();
}
you should get
A::foo1
B::foo2
B::foo1
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