livemocha language learning

(a), Learning iOS Development, we need to be inquisitive, if learning, from where to learn, first iOS is developed by Apple mobile operating system [1]. Apple first unveiled the system at the Macworld Conference on January 9, 2007, originally designed for the iphone, and later applied to products such as ipod Touch, ipad and Apple TV. iOS, like Apple's Mac OS X operating system, belongs to the Unix-like com

From the university to the present, has been more than five months, in the study of C language on the road also a little experience. The younger brother, summed up some of their own views and the suggestions of the Daniel, in order to motivate and warn yourself!1: The process of learning computer is a continuous process, it needs your accumulation and hard work, can not neglected a day or a little slack.2:l

When learning C ++, you must pay attention to relevant issues. In the C ++ world, there are two concepts: upward type conversion and downward type conversion, this section describes the forced type conversion from a subclass to a base class and from a base class to a subclass. After all, it is enough for me to have fun. Before learning a new thing, it is very important to solve the motivation problem. Just

Part 1ArticleI have learned Java Web/Android, C #, PHP, Flex (ActionScript), HTML/CSS/JS over the past three or four years, in addition, C/C ++ has also seen a point. Currently, it is mainly used for PHP and Android development. In fact, it is not much, but compared to many students who have been working for 3 or 4 years, they are still working on. NET. I am already quite a "Flower. ForProgramFor the development languages I developed, my learning

. This uses the pipelining technique, which divides the activities required for each instruction into different steps, organizing the hardware in the CPU into a series of stages, each of which performs a single step. These stages can be manipulated in parallel to handle different parts of different instructions. Super Scalar processors : The execution rate reaches one instruction above a period. single instruction, multi-data parallelism (SIMD parallelism): Allows an instruction to produce m

I. Introduction to logical operators1. Logical operator: (with) | | (OR)! (non)The formula: is true, a false is False|| The truth is true, a false is False！ False is True, True is False2, we use the following example to see the specific details:#include iOS Development Learning Record the 8th day of C language learning-----logical operators

[Learning notes] [OC language] self keyword, learning notes ocself 1. member variables and local variables have the same nameWhen the member variables and local variables have the same name, the proximity principle is adopted to access local variables.Use self to access member variables and distinguish local variables with the same name 2. Usage DetailsWhere: All

[Learning notes] [C Language] variable type, learning notes variable According to the scope of the variable, it can be divided:1. Local variables:1> definition: variables defined within a function (code block) (including the form parameters of the function)2> scope: Starting from the line that defines the variable until the end of the code block3> lifecycle: the

[Learning notes] [C Language] typedef, learning notes typedef 1. Concept We can use the typedef keyword to define a new name (alias) for various data types ). 2. Role: Create a new name for an existing type 3. Application scenarios:1> Basic Data Type2> pointer3> struct4> Enumeration5> pointer to function 4. Code 1 # include Usage notes 1 # include

[Learning notes] [C Language] Conditional compilation, learning notes Compilation 1. Concept of Conditional compilation In many cases, we hope that some of the code of the program can be compiled only when certain conditions are met. Otherwise, it will not be involved in compilation (only the Code involved in compilation can be executed eventually ), this is Cond

products, and so on, can be abstracted into vectors to allow the computer to know the distance between two properties. For example: We believe that 18-year-olds are closer to the 24-year-old than the 12-year-old, which is closer to the product than the computer, and so on.as long as the real-world objects can be abstracted into vectors, you can use the K-means algorithm to classify .In the "K-mean Clustering (K-means)" This article cited a very good application example, the author made a vector