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char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C/C++及内核技术

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C/C++及内核技术

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 - 专注C/C++及内核技术

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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How can I increment a char?

I'm new to Python, coming from Java and C. How can I increment a char? In Java or C, chars and ints are practically interchangeable, and in certain loops, it's very useful to me to be able to do increment chars, and index arrays by chars. ...
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术

... 16 17 #include <stdio.h> struct str{ int len; char s[0]; }; struct foo { struct str *a; }; int main(int argc, char** argv) { struct foo f={0}; if (f.a->s) { printf( f.a->s); } return 0; } 你编...
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How to create CSV Excel file C#? [closed]

...Object = obj; var line = String.Join(delimeter, propertyInfos.Select(x =&gt; SanitizeValuesForCSV(x.GetValue(localObject, null), delimeter))); sb.AppendLine(line); } return sb.ToString(); } private static string SanitizeValuesForCSV(object value, s...
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Single quotes vs. double quotes in C or C++

... In C and in C++ single quotes identify a single character, while double quotes create a string literal. 'a' is a single a character literal, while "a" is a string literal containing an 'a' and a null terminator (that is a 2 char array). In C++ the type of a character lite...
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AES Encryption for an NSString on the iPhone

... @Volomike If i use this, then should i select Export Compliance Information (YES) on iTunes-Connect ? – Jack Jul 27 '18 at 6:50 add a comm...
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Implicit type conversion rules in C++ operators

...re promoted to int Note. The minimum size of operations is int. So short/char are promoted to int before the operation is done. In all your expressions the int is promoted to a float before the operation is performed. The result of the operation is a float. int + float =&gt; float + float = flo...
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Get first n characters of a string

How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed? ...