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C pointers : pointing to an array of fixed size

... an array to a function is by using a pointer-to-array parameter void foo(char (*p)[10]); (in C++ language this is also done with references void foo(char (&p)[10]); ). This will enable language-level type checking, which will make sure that the array of exactly correct size is supplied a...
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How to compare strings ignoring the case

... You're looking for casecmp. It returns 0 if two strings are equal, case-insensitively. str1.casecmp(str2) == 0 "Apple".casecmp("APPLE") == 0 #=> true Alternatively, you can convert both strings to lower case (str.downcase) and compare for equality. ...
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How are software license keys generated?

...t a matter of making up an algorithm for which CD keys (which could be any string) are easy to generate and easy to verify, but the ratio of valid-CD-keys to invalid-CD-keys is so small that randomly guessing CD keys is unlikely to get you a valid one. INCORRECT WAY TO DO IT: Starcraft and Half-li...
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How is a non-breaking space represented in a JavaScript string?

...e manually it in its Javascript escaped form: var x = td.text(); if (x == String.fromCharCode(160)) { // Non-breakable space is char 160 x = ''; } More information about String.fromCharCode is available here: fromCharCode - MDC Doc Center More information about character codes for differe...
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How do I convert from BLOB to TEXT in MySQL?

...ROUP_CONCATs that convert your output to blobs and you really want them as strings. I had an issue similar to the OP's while using Node.JS with the node-mysql library - this fixed all group_concat issues. – marksyzm Jul 26 '13 at 13:53 ...
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Select multiple images from android gallery

... Define these variables in the class: int PICK_IMAGE_MULTIPLE = 1; String imageEncoded; List<String> imagesEncodedList; Let's Assume that onClick on a button it should open gallery to select images Intent intent = new Intent(); intent.setType("image/*"); intent.putExtra(Inte...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注IT技能提升

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注IT技能提升

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
https://www.tsingfun.com/it/cp... 

char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注IT技能提升

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
https://www.tsingfun.com/it/cp... 

char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注IT技能提升

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...