hanging comma

The comma operator is primarily used for connection expressions, such as:int a = 9;int b = 10;a = a+1, b = 3*4;* An expression concatenated with the comma operator is called a comma expression, and its general form is:Expression 1, expression 2, ..., expression nThe operation of the comma expression is: From left to ri

1 c,c++,java,php can tolerate the comma at the end.When assigning a value to an array in C,c++,java, the comma at the end of the last element is optional. The following two lines of code are equivalent to these languages.int a[] = {1,2,3}; /* 正确 */int a[] = {1,2,3,}; /* 正确 */PHP also inherits the characteristics of C, the following two lines of code are equivalent.$aarray(1,2,3/* 正确 */$aarray(1,2,3

Let's start with an interesting microblog.The C at the end is the lowest-priority comma operator. The comma operator is the last line of operator precedence and rarely an article records, which hides its sharpness. It may not be a strong JavaScript operator, but I like it. It's simple, elegant and you should make it your friend. So, let's get started-you need to learn more about JavaScript, the shy hero.Wha

With everyone to discuss, in PHP programming, the comma and dot difference of that point, there is a need for friends, may wish to refer to the next OH.In PHP, the comma is faster than the dot number, what is the reason for geometry? This article will be for everyone.Look at the code first: Learn the difference between a comma and a dot in PHP by example.C

See the "JS Language Essence and Programming practice" in the JS syntax explained in the ambiguity of the operator of the comma two semantics, make some notes let's take a look at these two examples: Alert (eval (' a=; ')); /Example 1alert (eval (' a=1,2,3; ')); /Example 2 The result is that both will pop up 3, and this usage creates confusion because the comma "," can be either a syntactic de

When C/C ++, Java, PHP, JavaScript, Json arrays, and objects are assigned values, can the last element be followed by a comma?1 C, C ++, Java, and PHP can tolerate commas at the end When values are assigned to arrays in C, C ++, and Java, the comma at the end of the last element is dispensable. The following two lines of code are equivalent to these languages. Int a [] = {1, 2, 3};/* correct */int a [] = {1

This article focuses on the analysis of CC ++, Java, PHP, JavaScript, Json arrays, and whether the last element can be followed by a comma when the object is assigned a value. For more information, see 1 C, C ++, Java, and PHP can tolerate commas at the end When values are assigned to arrays in C, C ++, and Java, the comma at the end of the last element is dispensable. The following two lines of code are e

Analysis of C/C ++, Java, PHP, JavaScript, Json array, object Value assignment can be followed by a comma, javascriptjson 1 C, C ++, Java, and PHP can tolerate commas at the end When values are assigned to arrays in C, C ++, and Java, the comma at the end of the last element is dispensable. The following two lines of code are equivalent to these languages. Int a [] = {1, 2, 3};/* correct */int a [] = {1, 2,

In php programming, the difference between using commas for echo and using dots is that using commas for echo. In php programming, the difference between using a comma for echo connection and using a dot number is that using an echo string is better than using a. connection. Let's not talk about the reason first. let's take a look at the difference between using commas for echo and using dots in php programming. The echo string is better than the. c

Transfer from http://blog.csdn.net/liuzx32/article/details/7831247Recently, I've been working on a comma problem with python, and I haven't figured it out today.1. Use of commas in parameter passing:This is not much to say that there is nothing to be confused about when a parameter or argument is passed the comma between the argumentse.g. DEF ABC (A, b) or ABC2. The use of commas in type conversions is main

How do you separate multiple expressions with commas in Python development (http://www.maiziedu.com/course/python-px/) ? I've previously explained how to print an expression using print, whether it's a string or another type of string that is automatically converted. print multiple expressions using print and you can separate them with commas:>>> print "Age", 19Age 19As you can see, a space character is inserted between each parameter.Note: The print parameters do not form a tuple as we expected

ObjectiveThe company recently developed the need to save data to a. CSV file (comma separated values) and then upload to the FTP server, for our system also has a customer system call, before completely did not contact this, so first to look at the explanation of Baidu: comma-separated values (comma-separated values,csv , sometimes referred to as character-delimi

Most of you know that commas are faster than dots, but you just don't know why, or what is the difference between commas and dots. The following small series will introduce you in detail. if you need a friend, you can refer to it. The code is as follows: Echo 'ABC'. 'Def '; // connect a string with a dotEcho 'ABC', 'Def '; // use a comma to connect to a string Here are some examples to identify their differences. The code is as follows: Echo '1 +

How can I remove the first comma, abcdefg, sfsdfsdfsd, sfddfs, abcdefg, sfsdfsdfsd, and sfddfs from the string? I want to remove the comma on the left, so one or two of them are uncertain, but there are two at most. how can I remove the comma on the left. How can I remove the first comma of the string? , Abcdefg, sfsd

Get the price has thousands of characters, some decimal point is a comma, ask me how to deal with Ah, calculation can not calculate. Reply to discussion (solution) Just replace and empty the comma. The problem is that the decimal point is comma how to deal with??? is the decimal point a comma?See for example A

Example: 1. echo 'ABC '. 'def '; // use the dot to connect to string 2. echo 'ABC', 'Def '; // use commas to connect to a string. many people may know that commas are faster than dots. but I don't know why. I don't even know the difference between the two. here are some examples. to identify their differences. 1. echo '1 For example: 1. echo 'ABC'. 'Def '; // connect a string with a dot 2. echo 'ABC', 'Def '; // use a comma to connect to a string Many

The comma operator is primarily used for connection expressionsExample: a=1+2,b=3*4An expression concatenated with the comma operator is called a comma-expression.The general form of it is:Expression 1, expression 2, ..., expression nThe operation of the comma expression is: first evaluates the expression 1, then evalu

every time inWrite a copy, there are two points that are very disturbing to us. 1th, what is pushed today? This question is absolutely perfect. sometimes really can't write out, when the brain empty, even outline are not listed, finally can only write a "don't want to write a copy today," directly on the sale of advertising. If you don't feel that way, think about what you eat today and ask yourself what you're eating. the 2nd is: every time you write a copy, you have to produce an illusion, thi

Examples of the three functions of comma in Python This example describes the three functions of comma in Python. Share it with you for your reference. The specific analysis is as follows: Recently I have encountered a comma problem in python, but I haven't figured it out yet. 1. Use of commas in parameter transmission: In this case, the