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“sending 'const NSString *' to parameter of type 'NSString *' discards qualifiers” warning
...he term on its right only if there's nothing on its left side (e. g. const char * and a char const * are non-const pointers to const char, but char *const is a const pointer to non-const char).
– user529758
Oct 11 '12 at 4:29
...
How do I trim whitespace from a string?
... Hello ")
' Hello'
Also, note that str.strip() removes other whitespace characters as well (e.g. tabs and newlines). To remove only spaces, you can specify the character to remove as an argument to strip, i.e.:
>>> " Hello\n".strip(" ")
'Hello\n'
...
What is a segmentation fault?
...hen you try to write to a portion of memory that was marked as read-only:
char *str = "Foo"; // Compiler marks the constant string as read-only
*str = 'b'; // Which means this is illegal and results in a segfault
Dangling pointer points to a thing that does not exist any more, like here:
char *p...
How do I group Windows Form radio buttons?
...Many(ctrl => GetAll(ctrl, type))
.Concat(controls)
.Where(c => c.GetType() == type);
}
}
}
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How do I check that a Java String is not all whitespaces?
I want to check that Java String or character array is not just made up of whitespaces, using Java?
15 Answers
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Is It Possible to Sandbox JavaScript Running In the Browser?
...; // object: object q=1 w=2
}
}).eval({
code : "[1, 2, 3].concat(input)",
input : [4, 5, 6],
callback: function(arr) {
console.log("array: ", arr); // array: [1, 2, 3, 4, 5, 6]
}
}).eval({
code : "function x(z){this.y=z;};new x(input)",
...
How to recursively list all the files in a directory in C#?
...tring> GetFilesFromDir(string dir) =>
Directory.EnumerateFiles(dir).Concat(
Directory.EnumerateDirectories(dir)
.SelectMany(subdir => GetFilesFromDir(subdir)));
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Error “initializer element is not constant” when trying to initialize variable with const
...s_pFooInit = (&(const foo_t){ .a=2, .b=4, .c=6 });
int main (int argc, char **argv) {
const foo_t *const f1 = &s_FooInit;
const foo_t *const f2 = s_pFooInit;
printf("Foo1 = %d, %d, %d\n", f1->a, f1->b, f1->c);
printf("Foo2 = %d, %d, %d\n", f2->a, f2->b, f2->...
Count characters in textarea
I want to count characters in a textarea, so I just made:
21 Answers
21
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Best way to parseDouble with comma as decimal separator?
... The problem with NumberFormat is that it will silently ignore invalid characters. So if you try to parse "1,23abc" it will happily return 1.23 without indicating to you that the passed-in String contained non-parsable characters. In some situations that might actually be desirable, but I don't ...