大约有 43,000 项符合查询结果（耗时：0.0398秒） [XML]
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...mmunity(particularly ##c++ on freenode) resent the use of wstrings and wchar_t , and their use in the windows api. What is exactly "wrong" with wchar_t and wstring , and if I want to support internationalization, what are some alternatives to wide characters?
...
Unique Constraint in Entity Framework Code First
...n k in uniqueAtt.KeyFields on pi.Name equals k
select new { KeyField = k, Value = pi.GetValue(entity, null).ToString() };
foreach (var item in _objectSet)
{
var keyValues = from pi in item.GetType().GetProperties()
j...
bool operator ++ and --
...ntil I've done ++ often enough to cause an overflow on it's own. Even with char as the type used and CHAR_BITS something low like 5, that's 32 times before this doesn't work any more (that's still argument enough for it being a bad practice, I'm not defending the practice, just explaining why it wor...
string sanitizer for filename
...
Instead of worrying about overlooking characters - how about using a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesyst...
What's the difference between a word and byte?
...s “Addressable unit of data large enough to hold any member of the basic character set of the execution environment.”
What this means is that the byte consists of at least enough adjacent bits to accommodate the basic character set for the implementation. That is, the number of possible values ...
Extracting the last n characters from a ruby string
To get the last n characters from a string, I assumed you could use
8 Answers
8
...
Removing numbers from string [closed]
...(i)
# Now join all elements of the list with '',
# which puts all of the characters together.
result = ''.join(no_digits)
As @AshwiniChaudhary and @KirkStrauser point out, you actually do not need to use the brackets in the one-liner, making the piece inside the parentheses a generator expressio...
How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
... CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
unsigned char *rawData = (unsigned char*) calloc(height * width * 4, sizeof(unsigned char));
NSUInteger bytesPerPixel = 4;
NSUInteger bytesPerRow = bytesPerPixel * width;
NSUInteger bitsPerComponent = 8;
CGContextRef c...
Difference between IsNullOrEmpty and IsNullOrWhiteSpace in C# [duplicate]
...String.IsNullOrEmpty(value) || value.Trim().Length == 0;
White-space characters are defined by the Unicode standard. The
IsNullOrWhiteSpace method interprets any character that returns a
value of true when it is passed to the Char.IsWhiteSpace method as a
white-space character.
...
Checking if a string array contains a value, and if so, getting its position
...
How do I check individual values? When I tried checking a char array for a char, I got a message that char can't be converted to System.Predicate<char>
– Aaron Franke
May 27 at 15:09
...