echo ,print的区别在于echo 可以输出多个变量值,而print只有一个变量,做为一个字符串输出. 另一点区别在于echo 没有返回值,print有返回值1.print不能输出数组和对象。 print_r可以输出stirng、int、float、array、object等,输出array时会用结构表示,print_r输出成功时返回true; 而且print_r可以通过print_r($str,...
string(1) "c" 'show' => string(1) "d" } */var_export($str);// 输出/** array ( 0 => 'a', 1 => 'b', 3 => 'c', 'show' => 'd', ) */
PrintAttributes.MediaSize(String, String, Int32, Int32) Creates a new instance. Properties AnsiC AnsiD AnsiE AnsiF Class Returns the runtime class of thisObject. (Inherited fromObject) Handle The handle to the underlying Android instance.
Gets an array of Form objects that represent all forms that are owned by this form. (Inherited from Form) Owner Gets or sets the form that owns this form. (Inherited from Form) Padding Gets or sets the padding for the control. Parent Gets or sets the parent container of the contr...
import numpy as np import pandas as pd data = np.array([1, 2, 3, 4, 5]) series = pd.Series(data) print(series) 33. 图形化界面 创建图形化界面应用,如使用Tkinter或PyQt: python 复制代码 import tkinter as tk root = tk.Tk()
'String was not recognized as a valid DateTime.' 'System.Array' does not contain a definition for 'Select' and no extension method 'Select' 'System.Windows.Forms.Button' does not contain a definition 'System.Xml.XmlException' occurred in System.Xml.dll Visual C#? 'Transaction failed. The ...
array([1, 2, 3, 4]) Example of an Array operation In the below example, you add two numpy arrays. The result is an element-wise sum of both the arrays. import numpy as np array_A = np.array([1, 2, 3]) array_B = np.array([4, 5, 6]) print(array_A + array_B) ...
AddJob(String) Inserts a new print job, whose content is a Byte array, into the queue. C# Copy public System.Printing.PrintSystemJobInfo AddJob(string jobName); Parameters jobName String The name of the print job. Returns PrintSystemJobInfo A PrintSystemJobInfo that represents the pri...
[C\C++] - putting the window in center of screen [C++ 2010] How to create big array sizes? [HELP]How to call a function in another process [SOLVED] Get process name image from PID [SOLVED] GetPrivateProfileString problems C++ I can't get it to work or I am doing it wrong... [...
// C program to print the square of array elements#include <stdio.h>intmain() {intarr[5]={1,2,3,4,5};inti=0; printf("Array elements:\n");for(i=0; i<5; i++) printf("%d ", arr[i]); printf("\nSquare of array elements:\n");for(i=0; i<5; i++) printf("%d ", ...