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AnswerRe: How to replace every different char with another given char Pin
Luc Pattyn25-May-19 19:16
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AnswerRe: How to replace every different char with another given char Pin
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QuestionFloating Point Calculations - c# vs. c++ Pin
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harold aptroot22-May-19 7:00
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Member 798912229-May-19 5:21
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Makes me think of when I was playing around with APL: No distinction between int and float, no explicit declaration of type. All numerics were 64 bit FP.

To avoid problems with values that conceptually are the same, but due to limited precision may not be (such as 1/3 + 1/3 + 1/3 not necessarily being identical to 1.0), there was a user settable tolerance variable - if my memory is right, it was called quadFUZZ): In any comparing of numerics, if the difference was less that FUZZ, the values were treated as exactly equal. I believe something similar also exist in other highly environments, such as Smalltalk.)

I was teaching C++ programming for a few years. Any hand-ins where float variables were compared by == to constants or othter varibles did not pass. My teaching was to consider == an invalid operator for floats - use >, >=, <, <=. And where appropriate, code the APL style in longhand: if (abs(f1-f2) < fuzz) { ... treat as exactly equal.

Of course some students objected: "Why can't we just ...", and I had to explain over and over. One student went as far to hand in a homework which stared with a big block comment, headed by: "This is how REAL PROGRAMMERS would code the solution: ..." and after som real dirty code, at the end of the comment block: "But this is how our professor forces us to do it: " - and then some clean and readble code, not commented out. So he knew how to behave in a disciplined way, but refused do give up his undisciplined behaviour completely. Smile | :)
GeneralRe: Floating Point Calculations - c# vs. c++ Pin
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AnswerRe: Floating Point Calculations - c# vs. c++ Pin
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QuestionPython str.extract to c# (regex?) Pin
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AnswerRe: Python str.extract to c# (regex?) Pin
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QuestionComboBox not refreshing error. Pin
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AnswerRe: ComboBox not refreshing error. Pin
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QuestionResize all controls on a user control or form automatically with changing of user control or form Pin
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AnswerRe: Resize all controls on a user control or form automatically with changing of user control or form Pin
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