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How to find time complexity of an algorithm
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How to find time complexity of an algorithm
You add up how many machine instructions it will execute as a function of the size of its input, and then simplify the expression to the largest (when N is very large) term and can include any simplify...
Android emulator failed to allocate memory 8
When I try to run my WXGA800 emulator from Eclipse it's giving an error like this
12 Answers
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C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...erator是完全不同的类，他们之间的关系甚至比string和complex<double>之间的关系还要远。
下面是这种方案的本质。
typedef deque<int> IntDeque; //类型定义，简化代码
typedef IntDeque::iterator Iter;
typedeef IntDeque:;const_iterator ConstIter;
IntDeque ...
Why are mutable structs “evil”?
...ue types immutable.
First, you tend to lose changes quite easily... for example, getting things out of a list:
Foo foo = list[0];
foo.Name = "abc";
what did that change? Nothing useful...
The same with properties:
myObj.SomeProperty.Size = 22; // the compiler spots this one
forcing you to d...
Python try…except comma vs 'as' in except
What is the difference between ',' and 'as' in except statements, eg:
5 Answers
5
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What's the difference between `1L` and `1`?
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So, @James and @Brian explained what 3L means. But why would you use it?
Most of the time it makes no difference - but sometimes you can use it to get your code to run faster and consume less memory. A double ("numeric") vector uses 8 bytes per e...
How to access parent scope from within a custom directive *with own scope* in AngularJS?
...ards, but I want to avoid something totally hacky or unmaintainable. For example, I know I could do it right now by taking the $scope from the preLink parameters and iterating over it's $sibling scopes to find the conceptual "parent".
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How to get Linux console window width in Python
...the number of characters that fits in one line without wrapping, not the pixel width of the window.
14 Answers
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How to initialise a string from NSData in Swift
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This is how you should initialize the NSString:
Swift 2.X or older
let datastring = NSString(data: fooData, encoding: NSUTF8StringEncoding)
Swift 3 or newer:
let datastring = NSString(data: fooData, encoding: String.Encoding.utf8.rawValue)
This doc explains the syntax.
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Sort a list from another list IDs
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docs = docs.OrderBy(d => docsIds.IndexOf(d.Id)).ToList();
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