As per the documentation, these are just synonyms. size() is there to be consistent with other STL containers (like vector, map, etc.) and length() is to be consistent with most peoples’ intuitive notion of character strings. People usually talk about a word, sentence or paragraph’s length, not its size, so length() is there to make … Read more
It is a pity that substring is not implemented in a way that handles short strings – like in other languages e.g. Python. Ok, we cannot change that and have to consider this edge case every time we use substr, instead of if-else clauses I would go for this shorter variant: myText.substring(0, Math.min(6, myText.length()))
If you are talking about the length of the string, you can use len(): >>> s=”please answer my question” >>> len(s) # number of characters in s 25 If you need the size of the string in bytes, you need sys.getsizeof(): >>> import sys >>> sys.getsizeof(s) 58 Also, don’t call your string variable str. It … Read more
Is there a way to only specify only a minimum length? Perhaps another attribute i can use? Using the standard data annotation, No. You must specify the MaximumLength. Only the other parameters are optional. In such a case, I’d recommend something like this: [StringLength(int.MaxValue, MinimumLength = 7)] You can also use a Regex (regular expression) … Read more
SELECT * FROM table_name WHERE CHAR_LENGTH(column_name) < 5
As it is mentioned in the documentation, use: Sequelize.STRING(32)
select SUBSTRING_INDEX(supplier_reference,’=’,-1) from ps_product; Please use this for further reference.
Ruby supports using format strings, like many other languages: [11] (pry) main: 0> ‘%3.3s’ % ‘f’ => ” f” [12] (pry) main: 0> ‘%3.3s’ % ‘foo’ => “foo” [13] (pry) main: 0> ‘%3.3s’ % ‘foobar’ => “foo” If you want to pad on the right, use a – in the format string: [14] (pry) main: … Read more
Does java.util.UUID.randomUUID().toString() length always equal to 36? Yes!! it is. A UUID actually a 128 bit value (2 long). To represent 128 bit into hex string there will be 128/4=32 char (each char is 4bit long). In string format it also contains 4 (-) that’s why the length is 36. Example: 54947df8-0e9e-4471-a2f9-9af509fb5889 32 hex char … Read more