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Or you can perform some math operation that does not change the original value, say add 0 or multiply by 1:

clear of contents of string in Arduino? How to clear of contents of string in Arduino?

You can find the examples and detailed instructions here: How to remove text before the last occurrence of a character.

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If you'd like to have the results as values independent on the original strings, use the Paste special - Values option to replace formulas with their values. However, if you feel you must zero out the buffer between inputs (and there are valid use cases for doing so, although this isn't one of them), use sizeof choice as the third argument to memset: memset( choice, 0, sizeof choice ); Non-printing characters­ - strips off any of the first 32 characters in the 7-bit ASCII set (code values 0 through 31) including a tab character, line break, and so on.

Clear Method (System) | Microsoft Learn Array.Clear Method (System) | Microsoft Learn

Today 2021.01.14 I perform tests on MacOs HighSierra 10.13.6 on Chrome v87, Safari v13.1.2 and Firefox v84 for chosen solutions. Results All the way more, if you're handling huge arrays (6 digits and above) you should try to set the first value to Null instead of running memset() through the whole String. Thank you sir Alexander, it helps a lot. It works like a charm! And also thanks to Bill Finchy for tracing the syntax error. Reply The canonical way to copy the data from the stream to some other preallocated buffer and then clear it would then be: std::size_t readAndClear(std::stringstream &stream, void* outBuf, std::size_t outSize)Hi, this is my first post and I am have had an Arduino for about a week and really like it. However, I do need some help. It may look dirtier at first, but is way faster. You just need to pay more attention on your code ;)