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Verifying that a string contains only letters in C#
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This assumes a latin alphabet, where Char.IsLetter allows for non-latin alphabets.
– Paul van Brenk
Jul 28 '09 at 7:31
5
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How well is Unicode supported in C++11?
...ects that can store a sequence consisting of a varying number of arbitrary char-like objects with the first element of the sequence at position zero.
Well, std::string does that just fine. Does that provide any Unicode-specific functionality? No.
Should it? Probably not. std::string is fine as a ...
Reading and writing binary file
.... I have the following code, but the buffer only stores a couple of ASCII characters from the first line in the file and nothing else.
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uint8_t can't be printed with cout
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It doesn't really print a blank, but most probably the ASCII character with value 5, which is non-printable (or invisible). There's a number of invisible ASCII character codes, most of them below value 32, which is the blank actually.
You have to convert aa to unsigned int to output t...
Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?
... lxml, many of these tools allow XPath as an alternative:
//table[contains(concat(' ', @class, ' '), ' myClass ')]//tr[contains(concat(' ', @class, ' '), ' row ')][position() mod 2)=1]
Other solutions using different technologies are left as an exercise to the reader; this is just a brief, contrive...
How can mixed data types (int, float, char, etc) be stored in an array?
...minated union, aka tagged union.
struct {
enum { is_int, is_float, is_char } type;
union {
int ival;
float fval;
char cval;
} val;
} my_array[10];
The type member is used to hold the choice of which member of the union is should be used for each array element. ...
Convert a character digit to the corresponding integer in C
Is there a way to convert a character to an integer in C?
15 Answers
15
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Best way to serialize an NSData into a hexadeximal string
... string of NSData. Empty string if data is empty. */
const unsigned char *dataBuffer = (const unsigned char *)[self bytes];
if (!dataBuffer)
return [NSString string];
NSUInteger dataLength = [self length];
NSMutableString *hexString = [NSMutableString stri...
字符串指针变量与字符数组的区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 设有定义字符型指针变量与字符数组的语句如下： char *pc ,str[100]; 则系统...使用字符串指针变量与字符数组的区别
（1）分配内存
设有定义字符型指针变量与字符数组的语句如下：
char *pc ,str[100];
则系...
Pointer expressions: *ptr++, *++ptr and ++*ptr
...ith your program, as it's the simplest to explain.
int main()
{
const char *p = "Hello";
while(*p++)
printf("%c",*p);
return 0;
}
The first statement:
const char* p = "Hello";
declares p as a pointer to char. When we say "pointer to a char", what does that mean? It means th...