C++ (Cpp) CSTRING::empty Examples

Programming Language: C++ (Cpp)

Class/Type: CSTRING

Method/Function: empty

Examples at hotexamples.com: 2

The `empty` function in the `CString` class of the C++ programming language is used to check if the string is empty or not. It returns a boolean value `true` if the string is empty and `false` if it is not.

Example 1:

CString str = "Hello";
if (str.IsEmpty()) {
    // do something if the string is empty
}

In this example, the `IsEmpty` function is used to check if the `str` is empty or not.

Example 2:

CString str = "";
if (str.IsEmpty()) {
    // do something if the string is empty
}

In this example, since `str` is empty, the `IsEmpty` function will return `true`. Package library: This is a member of the MFC (Microsoft Foundation Class) library, a collection of pre-built classes for developing Windows applications in C++.

C++ (Cpp) CSTRING::empty - 2 examples found. These are the top rated real world C++ (Cpp) examples of CSTRING::empty extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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c_str(12)

format(5)

length(5)

append(3)

clear(2)

empty(2)

Find(1)

GetBuffer(1)

GetLength(1)

Left(1)

ReverseFind(1)

Right(1)

appendf(1)

m_set_size(1)

reserve(1)

Example #1

Show file

File: cache.cpp Project: miro-kostadinov/tmos

/**
 * Reads a name from the cache
 *
 * Description:
 * 		Name	   		::=   	NameStartChar (NameChar)*
 * 		NameStartChar	::=   	":" | [A-Z] | "_" | [a-z]	//add "?"
 * 		NameChar	   	::=   	NameStartChar | "-" | "." | [0-9]
 * @param var
 * @return RES_OK if the char was skipped, RES_EOF if no more tags, errors..
 */
RES_CODE CCache::get_name(CSTRING& var)
{
	char ch;
	RES_CODE res;

	res = get_pc(ch);
	if (res == RES_OK)
	{
		if (ch == ':' || ch == '_' || ch == '?' || IS_ALPHA(ch))
		{
			var += ch;

			while (!var.empty())
			{
				res = getc(ch);
				switch (res)
				{
				case RES_OK:
					if (ch == ':' || ch == '_' || ch == '-' || ch == '.'
							|| IS_ALPHANUM(ch))
					{
						var += ch;
					}
					else
					{
						ungetc();
						return RES_OK;
					}
					break;

				case RES_EOF:
					return RES_OK;

				default:
					return (res);
				}

			}
			return RES_OUT_OF_MEMORY;
		}
		ungetc();
		res = RES_INVALID_DATA;
	}
	return (res);
}

Example #2

Show file

File: cache.cpp Project: miro-kostadinov/tmos

/**
 * Puts a string in the cache line
 * @param var
 * @return
 */
RES_CODE CCache::buffer(CSTRING &var)
{
	unsigned int len;

	if (!var.empty())
	{
		if (pos)
		{
			len = buf.length() - (pos - buf.c_str());
			if (len)
			{
				CSTRING s(pos, len);
				if (next.empty())
					next = s;
				else
					next = s + next;
			}
		}
		buf = var;
		pos = (char*) buf.c_str();
	}
	return RES_OK;
}