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Are there disadvantages to using a generic varchar(255) for all text-based fields?
... (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothered to override it).
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Coding Practices which enable the compiler/optimizer to make a faster program
...ns" and variable sections. Think of mail-merge.
Declare constant text (string literals) as static const
When variables are declared without the static, some compilers may allocate space on the stack and copy the data from ROM. These are two unnecessary operations. This can be fixed by using t...
java.util.regex - importance of Pattern.compile()?
...rtance of Pattern.compile() method?
Why do I need to compile the regex string before getting the Matcher object?
8 An...
Correct use of Multimapping in Dapper
...not CustomerId, CustomerName, since Dapper doesn't Trim the results of the string split. It will just throw the generic spliton error. Drove me crazy one day.
– jes
Aug 29 '13 at 16:12
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Python time measure function
... return wrap
Note I'm calling f.func_name to get the function name as a string(in Python 2), or f.__name__ in Python 3.
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How do I specify a pointer to an overloaded function?
...e functions):
void f_c(char i)
{
return f(i);
}
void scan(const std::string& s)
{
std::for_each(s.begin(), s.end(), f_c);
}
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Do I need to disable NSLog before release Application?
...BUG_MODE
#define DLog( s, ... ) NSLog( @"<%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )
#else
#define DLog( s, ... )
#endif
Now instead of NSLog use DLog everywhere. When testing and debugging...
TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
...very occasional multi-byte characters, so close to one-byte-per-letter. An extra character has to be allowed for inter-word spaces, so I've rounded down from 5.8 bytes per word. Languages with lots of accents such as say Polish would store slightly fewer words, as would e.g. German with longer words...
Program only crashes as release build — how to debug?
... was indeed caused by a buffer overflow, caused a single byte difference:
char *end = static_cast<char*>(attr->data) + attr->dataSize;
This is a fencepost error (off-by-one error) and was fixed by:
char *end = static_cast<char*>(attr->data) + attr->dataSize - 1;
The wei...
How to split a string in Haskell?
Is there a standard way to split a string in Haskell?
13 Answers
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