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How do I declare a 2d array in C++ using new?
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A dynamic 2D array is basically an array of pointers to arrays. You can initialize it using a loop, like this:
int** a = new int*[rowCount];
for(int i = 0; i < rowCount; ++i)
a[i] = new int[colCount];
The above, for colCount= 5 and rowCount = 4, would produce the following:
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What does auto&& tell us?
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By using auto&& var = <initializer> you are saying: I will accept any initializer regardless of whether it is an lvalue or rvalue expression and I will preserve its constness. This is typically used for forwarding (usually with T&&). The r...
What are allowed characters in cookies?
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this one's a quickie:
You might think it should be, but really it's not at all!
What are the allowed characters in both cookie name and value?
According to the ancient Netscape cookie_spec the entire NAME=VALUE string is:
a sequence of characters exclud...
Why can I use a function before it's defined in JavaScript?
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The function declaration is magic and causes its identifier to be bound before anything in its code-block* is executed.
This differs from an assignment with a function expression, which is evaluated in normal top-down order.
If you changed the example to say:
var int...
Scrolling a flexbox with overflowing content
...kins (author of the flexbox spec) about this, and this is what we came up with:
HTML:
<div class="content">
<div class="box">
<div class="column">Column 1</div>
<div class="column">Column 2</div>
<div class="column">Column 3<...
How to set default value for form field in Symfony2?
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Can be use during the creation easily with :
->add('myfield', 'text', array(
'label' => 'Field',
'empty_data' => 'Default value'
))
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How to resize superview to fit all subviews with autolayout?
My understanding of autolayout is that it takes the size of superview and base on constrains and intrinsic sizes it calculates positions of subviews.
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What is the best algorithm for overriding GetHashCode?
... in a lot of places throughout the .NET base class libraries. Implementing it properly is especially important to find items quickly in a collection or when determining equality.
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What is Activity.finish() method doing exactly?
... android applications for a while, and followed a lot of posts about activity life cycle, and application's life cycle.
12...
What is the 'new' keyword in JavaScript?
The new keyword in JavaScript can be quite confusing when it is first encountered, as people tend to think that JavaScript is not an object-oriented programming language.
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