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How to replace part of string by position?
I have this string: ABCDEFGHIJ
18 Answers
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Reading a plain text file in Java
...ad this wonderful (yet free) book called Thinking In Java
In Java 7:
new String(Files.readAllBytes(...))
(docs)
or
Files.readAllLines(...)
(docs)
In Java 8:
Files.lines(..).forEach(...)
(docs)
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Hidden Features of MySQL
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Binary Protocol:
MySQL 4.1 introduced a binary protocol that allows non-string data values to be sent
and returned in native format without conversion to and from string format. (Very usefull)
Aside, mysql_real_query() is faster than mysql_query() because it does not call strlen()
to opera...
Received an invalid column length from the bcp client for colid 6
...atabase table schema.
To avoid this, try exceeding the data-length of the string datatype in the database table.
Hope this helps.
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Most efficient way to concatenate strings?
What's the most efficient way to concatenate strings?
17 Answers
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Why should hash functions use a prime number modulus?
... by taking the "component parts" of the input (characters in the case of a string), and multiplying them by the powers of some constant, and adding them together in some integer type. So for example a typical (although not especially good) hash of a string might be:
(first char) + k * (second char)...
Returning an array using C
...nd of the sizeof or unary & operators, or if the array expression is a string literal being used to initialize another array in a declaration.
Among other things, this means that you cannot pass an array expression to a function and have it received as an array type; the function actually rec...
Why the switch statement cannot be applied on strings?
...e reason why has to do with the type system. C/C++ doesn't really support strings as a type. It does support the idea of a constant char array but it doesn't really fully understand the notion of a string.
In order to generate the code for a switch statement the compiler must understand what it...
What does the C++ standard state the size of int, long type to be?
... range. You can infer minimum size in bytes from that and the value of the CHAR_BIT macro that defines the number of bits in a byte. In all but the most obscure platforms it's 8, and it can't be less than 8.
One additional constraint for char is that its size is always 1 byte, or CHAR_BIT bits (henc...
What is a higher kinded type in Scala?
..., but I have not seen this used anywhere), such as the value 1 or the type String, we usually say something is a "proper" value or type.
A proper value is "immediately usable" in the sense that it is not waiting for arguments (it does not abstract over them). Think of them as values that you can eas...