1149 - REXX 为新晋程序员而作.pdf

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1、KNOWLEDGEISTHEBESTDEFENSEOrlando,FLOctober 69IBM TechXchange 2025Jerry SpencerSenior Software EngineerPrecisely1149 REXX For The Newly Tenured Programmer1KNOWLEDGE IS THE BEST DEFENSEAbout the Presenter Jerry Spencer2Started as an application programmer in 1975 Became a System Programmer in 1978My c

2、areer pre-dates:The Internet(as we know it)PCs(laptops/desktops/tablets)Cell PhonesWiFiPassion for sharing knowledge and experienceKNOWLEDGE IS THE BEST DEFENSEOrlando,FLOctober 69IBM TechXchange 2025AGENDAKNOWLEDGE IS THE BEST DEFENSEAGENDAWHAT IS REXX?WHAT CAN REXX DO FOR ME?HOW DO I CODE IN REXX?

3、WRAP UP4KNOWLEDGE IS THE BEST DEFENSEOrlando,FLOctober 69IBM TechXchange 20255 5WHAT IS REXX?KNOWLEDGE IS THE BEST DEFENSE6WHAT IS REXX?High level,general-purpose programming language Designed to be:1.Easy to learn and read2.Versatile3.Flexible KNOWLEDGE IS THE BEST DEFENSE7High level Dont have to t

4、ell system how to do things:If x=y is high level Assembler(low level)is:CLC X,Y BE RIGHT_PLACE B SOMEWHERE_ELSE RIGHT_PLACE DS 0H SOMEWHERE_ELSE DS 0H WHAT IS REXX?High level,general-purpose programming languageKNOWLEDGE IS THE BEST DEFENSE8General-purpose programming language COBOLBOL is(by definit

5、ion)B Business O Oriented L Language There are scientific languages There are text manipulation languages REXX allows you to do pretty much anything you can think ofWHAT IS REXX?High level,general-purpose programming languageKNOWLEDGE IS THE BEST DEFENSE9/*REXX*/*comment */SAY Hello World Greeting=H

6、ello World SAY Greeting Say GREETINGsay GrEeTiNgWHAT IS REXX?Easy to learn and readKNOWLEDGE IS THE BEST DEFENSE10WHAT IS REXX?VersatileKNOWLEDGE IS THE BEST DEFENSE11WHAT IS REXX?VersatileKNOWLEDGE IS THE BEST DEFENSE12WHAT IS REXX?VersatileKNOWLEDGE IS THE BEST DEFENSE13WHAT IS REXX?VersatileKNOWL