By Günther Färber, Julia Kirchner
If youd wish to find out how to application your first executable ABAP purposes, then this e-book is your perfect significant other. even if youre already conversant in one other programming language, youll reap the benefits of uncomplicated causes and step by step guideline to successfully grasp the fundamentals of programming business-critical functions with ABAP.
Comprehensive, easy-to-follow descriptions introduce you to every of the suitable suggestions and an ongoing functional situation that maintains through the e-book guarantees that you simply get yourself up to speed with all significant parts of ABAP improvement. quite a few step by step tactics, screenshots, and resolution suggestions are hired by means of the authors to explain procedural and object-oriented language parts in a transparent and easy-to-understand manner. In each one bankruptcy, youll extra expand the pattern program, permitting you to construct the talents had to simply reproduce the improvement of a complete ABAP program - together with all of its tricky info.
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Extra resources for ABAP Basics
Close It still works as usual. In fact, if you need only one statement inside the while (like here), you can make the entire while loop inline instead of the while block, and it still works. gets The code is now three lines in total. , in a single string). 38 Chapter 2 ■ Working with Files and Strings Solution Use the read function on the file as follows, for example. txt' puts text It should run as follows, printing all the lines (which are part of the text string variable in this program). rb welcome to Seattle How It Works First, be aware that for a rather big file, this may not be a good idea.
However, the pattern is optional and could be a regular expression. The limit is also optional (limits, in general, indicate the number of columns that are to be returned; the last column includes the rest of the string). If limit is omitted, trailing empty fields are suppressed. If it is 1, the entire string is returned as the only element of the array. If it is negative, there is no limit to the number of fields returned; trailing null fields are not suppressed. The pattern=$! syntax implies that the default value of the pattern is '$;' (which is a predefined variable and the value of that is 'nil' by default.
Try the following code. x = gets puts x * 2 If you provide 3 as input, it does not produce 6; but you see something that might seem strange at first glance. rb 3 3 3 20 Chapter 2 ■ Working with Files and Strings The first 3 is the input given, of course. The other 3s are the output. , essentially two strings added side by side), but notice also that the interpreted value of x has a newline character in it. 2 Accepting Numbers as Input Problem Accept numbers as input from the console. Solution Let’s untangle this part by part.
ABAP Basics by Günther Färber, Julia Kirchner