print variable

command-line debugging tools in a UNIX environment: gdbIf you need to use the GDB debugger, add the-G option to GCC.The following command section is a simplified version, such as using L instead of list and so on.1. Basic Commands1) Enter GDB #gdb

Reprinted from: http://www.ibm.com/developerworks/cn/linux/l-cn-pythondebugger/Debug is a very important skill for any developer and it can help us pinpoint errors and find bugs in the program. Python offers a range of debug tools and packages that

Translation: SHADOWMYDX reprint Please specifyIn the first part of this series, I discussed the various parts of the MVC design pattern and their specific performance. In the second part, I talked about some common conventions for web development

Method 1: Use expr to calculate the sum of the variable and an integer. If normal execution is performed, the variable is an integer. Otherwise, an error occurs. $? Replace a non-0 value expr $ args + 0 & amp; & gt;/dev/null. Method 2: print the

Var_dump--Information about the print variable describes voidVar_dump(mixed expression [, mixed expression [, ...]])This function displays structure information about one or more expressions, including the type and value of the expression. The array

In this article, we will discuss how to use the gdb debugger to debug C Programs in six simple steps.Compile a C program example with errors for debugging purposes. To learn how to debug C Programming, let's create the following C program, which

After 3 years of development, it is commonplace to compile and install software under Linux. Take GCC, there are not more than 10 times, but basically every time you will encounter some weird problems. It seems that Ides like VS and codeblocks make

Resharper help documentation, ResharperHelp documentation ---------- John 2014/8/06   1. Resharper Introduction Resharper is an encoding extension. In addition to the. net language version, it also has other versions. For example, Java, PHP, and

1. Use print_r ($ array/$ var)Print is the meaning of printing, and r is taken from the word of Array. The function is to print the Array content. It can print both the Array content and common variables.Print_r ($ _ REQUEST );Print_r ($ _ GET);/*

Basic expansion of C language (1) and basic expansion of C Language Tan haoqiang is a beginner in C language. As for this book, it would be good to take the test, but if he wants to engage in programming in the future and deal with C more often, I

Reprinted: http://blog.csdn.net/jallin2001/archive/2009/11/13/4808618.aspx   The regular expression character set is often used to extract or exclude Chinese characters from a string. However, this is very troublesome and the effect is not very

  C/C ++ development in Unix-like environments,CodeDebugging is troublesome. the most primitive addition, tracking, and debugging are very time-consuming. Especially for a large project, debugging is very difficult when the number of lines of code

We can use any text editor, such as gedit, kedit, emacs, VI, to write shell scripts. It must start with the following line (the first line of the file must be placed ): #! /Bin/sh... Note: It is best to use "! /Bin/bash "instead of"! /Bin/sh ",

CPAN appconfig module and database-oriented Configuration     Level:

Http://www.cnblogs.com/4925278/archive/2012/11/28/gcc-gdb-make-makefile.html Gcc-GDB-make-makefile 1. During GCC program compilation, the compilation and connection processes can be divided into four

1. The global statement is used to declare that X is global.   2. multi-thread programming in Python Threading. active_count () # returns the number of threading thread objects in the alive state. current_thread () # returns the current thread

Operating system design and implementation (version 2) is an excellent teaching material for studying the Operating System. This book is based on the minix operating system as an example, so we need a test environment that can run Minix. you can

In the student era, envy the laboratory, the teacher in the inside can tinker with all kinds of interesting things. At the university, finally had the opportunity to do a lot of experiments in the laboratory, because I was a physics department, and

Python Conditional Statements A python conditional statement determines the code block that executes by executing the result of one or more statements (true or false). You can easily understand the execution of conditional statements by: The

The echo command is very common in shell programming and is often used to print the variable value under the terminal, therefore, it is necessary to understand the echo usage. The echo command function is to display a piece of text on the display,