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Why can't I use float value as a template parameter?
... current C++ standard does not allow float (i.e. real number) or character string literals to be used as template non-type parameters. You can of course use the float and char * types as normal arguments.
Perhaps the author is using a compiler that doesn't follow the current standard?
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What is the difference between LL and LR parsing?
...n at the start symbol and try to apply productions to arrive at the target string, whereas LR parsers begin at the target string and try to arrive back at the start symbol.
An LL parse is a left-to-right, leftmost derivation. That is, we consider the input symbols from the left to the right and at...
Left Join With Where Clause
...to retrieve all default settings from the settings table but also grab the character setting if exists for x character.
6 ...
What is the maximum length of a table name in Oracle?
...ou have a 12.2 DB with compatible set to 11.2.0, is still limits you to 30 chars.
– rtaft
Nov 15 '18 at 15:13
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Why is “a” != “a” in C?
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What you are comparing are the two memory addresses for the different strings, which are stored in different locations. Doing so essentially looks like this:
if(0x00403064 == 0x002D316A) // Two memory locations
{
printf("Yes, equal");
}
Use the following code to compare two string values...
How can I remove a substring from a given String?
Is there an easy way to remove substring from a given String in Java?
12 Answers
12...
How to read a text file reversely with iterator in C#
...lt;/summary>
public sealed class ReverseLineReader : IEnumerable<string>
{
/// <summary>
/// Buffer size to use by default. Classes with internal access can specify
/// a different buffer size - this is useful for testing.
/// </summary>
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C++ templates Turing-complete?
...;
template<int n>
struct State {
enum { value = n };
static char const * name;
};
template<int n>
char const* State<n>::name = "unnamed";
struct QAccept {
enum { value = -1 };
static char const* name;
};
struct QReject {
enum { value = -2 };
static char ...
What is move semantics?
...nderstand move semantics with example code. Let's start with a very simple string class which only holds a pointer to a heap-allocated block of memory:
#include <cstring>
#include <algorithm>
class string
{
char* data;
public:
string(const char* p)
{
size_t size =...
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...