DOING THE MATH: ALL ABOUT NUMBERS in Objective-C

Generation QR Code ISO/IEC18004 in Objective-C DOING THE MATH: ALL ABOUT NUMBERS

CHAPTER 4 DOING THE MATH: ALL ABOUT NUMBERS
QR Code ISO/IEC18004 Printer In Objective-C
Using Barcode generation for iPhone Control to generate, create QR Code ISO/IEC18004 image in iPhone applications.
www.OnBarcode.com
Barcode Maker In Objective-C
Using Barcode creation for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
I started by creating three variables. These variables, for the most part, will hold the values that will return the handler s result. The variables are high_number, low_number, and numbers_total, which will be used to get the list average at the end. The repeat loop between lines 6 and 11 is the main loop that goes through the numbers in the list and analyzes each number to see whether it fits in the high number or low number spots and to add it to the numbers total. Line 8 determines whether the currently processed number is larger than the value stored in the high_number variable. If it is, that number will become the new value of the high_number variable. This way, when the repeat loop concludes, the high_number variable will contain the highest number from the number_list variable. Line 9 is responsible for determining the lowest number in a similar fashion. Line 12 calculates the average of all the numbers by dividing their total, stored in the variable numbers_total, by the number of items in the list. Line 13 puts all this information into a neatly labeled record and returns it.
Painting GTIN - 13 In Objective-C
Using Barcode printer for iPhone Control to generate, create UPC - 13 image in iPhone applications.
www.OnBarcode.com
Barcode Drawer In Objective-C
Using Barcode generator for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
Using the mod and div Operators
Paint EAN 128 In Objective-C
Using Barcode generation for iPhone Control to generate, create UCC - 12 image in iPhone applications.
www.OnBarcode.com
Print Code 39 In Objective-C
Using Barcode printer for iPhone Control to generate, create Code 3 of 9 image in iPhone applications.
www.OnBarcode.com
The final math example you ll look at uses the mod and div operators. Although mod and div are used less often than other math operators, when you need them, they really shine. mod and div deal with how many instances of a number can fit inside a different number without breaking. For instance, div can tell you that 2 can fit three times in 6.5, while mod will tell you that after you fit 2 in 6.5 three times, the remainder is 0.5. Why is this so great Well, I ll discuss a couple of uses of div and mod. First, what if you want to take a large number of seconds and show it as minutes and seconds You can do something like this: 1. 2. 3. 4. 5. set set set set --> total_seconds to 735 the_minutes to total_seconds div 60 extra_seconds to total_seconds mod 60 the_time to (the_minutes as string) & ":" & extra_seconds "12:15"
Encode Barcode In Objective-C
Using Barcode generation for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
UPC E Creator In Objective-C
Using Barcode encoder for iPhone Control to generate, create UCC - 12 image in iPhone applications.
www.OnBarcode.com
Second say you are printing postcards what if you needed to fit four postcards per page, and the number of postcards changes from job to job If a job has 27 postcards, how many whole pages will you need You need the following calculation: set total_postcards to 27 set postcards_per_page to 4 set whole_pages to total_postcards div postcards_per_page if whole_pages mod postcards_per_page > 0 then set whole_pages to whole_pages + 1 end if return whole_pages --> 7 27 div 4 will return 6, since 4 fits 6 times into 27. Then, if the remainder is zero, it means that the division is perfect, like if you had 24 postcards. But if the remainder is more than 0, then you need to add a page.
Making QR Code In .NET Framework
Using Barcode generator for Visual Studio .NET Control to generate, create QR Code image in .NET applications.
www.OnBarcode.com
Making QR Code JIS X 0510 In Java
Using Barcode generation for Java Control to generate, create QR Code JIS X 0510 image in Java applications.
www.OnBarcode.com
Reversing Numbers
Encoding Barcode In C#
Using Barcode maker for Visual Studio .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Recognize EAN 13 In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
To convert a number from positive to negative, or visa versa, simply add the minus sign before it, even if the number is in a variable: set my_balance to 500 set my_opposite_balance to my_balance --> 500
Data Matrix ECC200 Generator In Objective-C
Using Barcode creator for iPad Control to generate, create Data Matrix image in iPad applications.
www.OnBarcode.com
EAN-13 Supplement 5 Maker In Java
Using Barcode encoder for Java Control to generate, create EAN-13 Supplement 5 image in Java applications.
www.OnBarcode.com
CHAPTER 4 DOING THE MATH: ALL ABOUT NUMBERS
Data Matrix Drawer In None
Using Barcode creation for Office Excel Control to generate, create Data Matrix ECC200 image in Microsoft Excel applications.
www.OnBarcode.com
Recognizing ECC200 In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
In this situation, the minus operator is the unary negation operator, not the binary subtraction operator that allows you to subtract one number from the other. (Unary means an operator has only one operand; binary means an operator has two of them.)
Recognizing Code 128B In VS .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Print Barcode In Java
Using Barcode drawer for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
Folder Kitchen Timer
USS-128 Creator In None
Using Barcode creation for Online Control to generate, create GS1-128 image in Online applications.
www.OnBarcode.com
Data Matrix 2d Barcode Printer In Java
Using Barcode maker for Android Control to generate, create ECC200 image in Android applications.
www.OnBarcode.com
In the next example script, I will show how to convert an ordinary Finder folder into a kitchen timer. The folder s name will change every second to reflect the remaining time. At the end, Apple iTunes will pick a random track and play it to alert you that your food is ready. Here is the script in its entirety: 1. display dialog "How many minutes " default answer "120" 2. set timer_minutes to text returned of result as integer 3. tell application "Finder" to set folder_alias to (make new folder at desktop with properties {name:"Timer"}) as alias 4. repeat with the_minute from (timer_minutes 1) to 0 by 1 5. set hrs_left to the_minute div 60 6. set min_left to the_minute mod 60 7. set hrs_text to pad_with_zero(hrs_left) 8. set min_text to pad_with_zero(min_left) 9. repeat with sec_left from 59 to 0 by 1 10. set sec_text to pad_with_zero(sec_left) 11. set displayTime to hrs_text & ";" & min_text & ";" & sec_text 12. tell application "Finder" to set name of folder_alias to displayTime 13. delay 1 14. end repeat 15. end repeat 16. tell application "iTunes" 17. play some track of library playlist "library" of source 1 18. end tell 19. on pad_with_zero(the_number) 20. if the_number < 10 then 21. return ("0" & the_number) 22. else 23. return (the_number as string) 24. end if 25. end pad_with_zero The script utilizes one custom handler, called pad_with_zero, whose purpose is to convert an integer into a string while ensuring that if the integer has only one digit, it will be preceded by a zero. This has to be done as a string since if you ask AppleScript for 01 as an integer or as a real, the preceding zero will be disregarded. If you have some basic understanding of handlers, you know that they can accept values as parameters and return values as well. This handler accepts a single integer parameter, and it returns a string. If the handler is fed the integer 5, it ll return "05". The pad_with_zero handler sits at the end of the script (lines 19 25), and you call it to perform three times during the execution of the script.
Copyright © OnBarcode.com . All rights reserved.