array_20arithmetic
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| array_20arithmetic [2018/03/31 13:19] – external edit 127.0.0.1 | array_20arithmetic [2024/01/05 00:22] (current) – external edit 127.0.0.1 | ||
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| //by Richard Russell, March 2014//\\ \\ **LB Booster** supports the ability to perform arithmetic operations on whole arrays, that is the operation is performed individually on every element of the array without you having to code a loop. For example you can add, subtract, multiply or divide arrays as follows: | //by Richard Russell, March 2014//\\ \\ **LB Booster** supports the ability to perform arithmetic operations on whole arrays, that is the operation is performed individually on every element of the array without you having to code a loop. For example you can add, subtract, multiply or divide arrays as follows: | ||
| + | <code lb> | ||
| a() = b() + c() | a() = b() + c() | ||
| a() = b() - c() | a() = b() - c() | ||
| a() = b() * c() | a() = b() * c() | ||
| a() = b() / c() | a() = b() / c() | ||
| + | </ | ||
| Note that the arrays must all be the same size. If each array has a maximum index value of 10 (the default) the first of the above examples is equivalent to (but will run much faster than) this code: | Note that the arrays must all be the same size. If each array has a maximum index value of 10 (the default) the first of the above examples is equivalent to (but will run much faster than) this code: | ||
| + | <code lb> | ||
| for i = 0 to 10 | for i = 0 to 10 | ||
| a(i) = b(i) + c(i) | a(i) = b(i) + c(i) | ||
| next i | next i | ||
| + | </ | ||
| You can also add, subtract, multiply or divide each element by a scalar numeric value as follows: | You can also add, subtract, multiply or divide each element by a scalar numeric value as follows: | ||
| + | <code lb> | ||
| a() = b() + n | a() = b() + n | ||
| a() = b() - n | a() = b() - n | ||
| a() = b() * n | a() = b() * n | ||
| a() = b() / n | a() = b() / n | ||
| + | </ | ||
| The + (concatenation) operator can be used with string arrays: | The + (concatenation) operator can be used with string arrays: | ||
| + | <code lb> | ||
| a$() = b$() + c$() | a$() = b$() + c$() | ||
| a$() = b$() + " | a$() = b$() + " | ||
| + | </ | ||
| Finally, you can assign the same value to every element of an array in one operation: | Finally, you can assign the same value to every element of an array in one operation: | ||
| + | <code lb> | ||
| a() = 4 * atn(1) | a() = 4 * atn(1) | ||
| a$() = "Hello world!" | a$() = "Hello world!" | ||
| + | </ | ||
array_20arithmetic.1522502345.txt.gz · Last modified: 2024/01/05 00:18 (external edit)