perl exit foreach loop

About the origins and characteristics of Perl and Python Perl is the abbreviation of practical extraction and report Language, created by Larry Wall in 1987, originally designed to facilitate the processing of reports on UNIX, and has become a fully

Perl Overview Perl was first developed by Larry Wall and is a "glue" language, for example, converting the output of the previous program into the input of the next program. The first version of Perl was released in December 18, 1987 and has been

A nested loop structure is often used in programming. Sometimes, a method is required to interrupt it. Perl provides the following four loop modifiers: continue, next, last, redo; 1. Continue statement block: The incremental list of the for loop is

Comparison of foreach and while loops in php. Foreach and while are both loops in php, so what is their difference between foreach and while loops, and that performance will be better, next, I will introduce the differences between foreach and while

  Author: gnuhpcSource: http://www.cnblogs.com/gnuhpc/ 1. Differences and relationships between Shell and PerlPerl is full of 10 thousand gold oil. It has implemented the functions of various system commands from its own interior, which is much more

Foreach and while are both loops in php, so what is the difference between foreach and while loops? The performance will be better. Next I will introduce the differences between foreach and while loops and the performance comparison, for more

Reference: http://shouce.jb51.net/perl5/Web site environment configuration: http://www.jb51.net/article/74005.htm The basic syntax of Perl http://www.jb51.net/shouce/Perl.htm Preface: What is Perl, and what is it used for? Perl's original designer'

1. Statement BLOCK:The section between {} is block statement blocks. 2. Conditional statement:if (expression) block; if (expression)BLOCK1else BLOCK2; if (expression1)BLOCK1;elsif (expression2)BLOCK2;ElseBLOCK3; #倒置的if语句Expression if

I. Condition statements:There are several types 1. If (condition expression) {statement block} 2. Single Perl statement if (conditional expression ); 3. If (condition expression) {statement Block 1} Else {statement Block 2} 4. If (condition

1. Statement block:The parts between {} Are BLOCK statement blocks. 2. Condition Statement:If (expression) BLOCK; If (expression)BLOCK1Else BLOCK2; If (expression1)BLOCK1;Elsif (expression2)BLOCK2;ElseBLOCK3; # Inverted if statementExpression if