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What is the right way to check for a null string in Objective-C?
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What type is title supposed to be? If it's an NSString, for instance, I receive the following warning: comparison of distinct Objective-C types 'struct NSNull *' and 'struct NSString *' lacks a cast Is there any way of rem...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
I've been wrestling with this for a while and can't quite figure out what's happening. I have a Card entity which contains Sides (usually 2) - and both Cards and Sides have a Stage. I'm using EF Codefirst migrations and the migrations are failing with this error:
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Open firewall port on CentOS 7
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I used this command but it didn't work for me, what did, was changing --zone=dmz to --zone=public
– Tom Hall
Sep 25 '14 at 6:04
2
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What is the point of interfaces in PHP?
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That's not what interfaces are about at all. It's not a compromise over multiple inheritance, it's about creating a conceptual and abstract contract for objects to implement, and for other objects/methods to consume. interfaces are a to...
Find XOR of all numbers in a given range
... these properties important? Well, a simple route is to expand it out into what it really is, and then you can see these properties at work.
First, let's define what we want and call it n:
n = (a ^ a+1 ^ a+2 .. ^ b)
If it helps, think of XOR (^) as if it was an add.
Let's also define the f...
How to place div side by side
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There are many ways to do what you're asking for:
Using CSS float property:
<div style="width: 100%; overflow: hidden;">
<div style="width: 600px; float: left;"> Left </div>
<div style="margin-left: 620px;"> Ri...
What are the differences between WCF and ASMX web services?
...e WCF Developer Center on MSDN.
Update: link seems to be dead - try this: What Is Windows Communication Foundation?
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What should I put in a meteor .gitignore file?
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Here is what I use with Webstorm and Meteor 1.4 deployed with Mupx.
# Meteor files to ignore now handled by .ignore file within .Meteor folder automatically
# settings file to ignore to protect API keys
settings.json
# MUP / MUPX...
JavaScript module pattern with example [closed]
... declaration 2. Function expression.
Here are using function expression.
What is namespace?
Now if we add the namespace to the above piece of code then
var anoyn = (function() {
}());
What is closure in JS?
It means if we declare any function with any variable scope/inside another function...
Why does changing the returned variable in a finally block not change the return value?
...y answer. In the situation you describe, the finally block does not change what object is returned (the StringBuilder) but it can change the internals of the object. The finally block executes before the method actually returns (even though the return statement has finished), so those changes occur ...