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Why can I pass 1 as a short, but not the int variable i?
...soft.com/en-us/library/ybs77ex4(v=vs.71).aspx
As this page says, implicit casts from a bigger data type to short are only allowed for literals. The compiler can tell when a literal is out of range, but not otherwise, so it needs reassurance that you've avoided an out-of-range error in your program ...
How can I determine whether a 2D Point is within a Polygon?
...hat can handle all three cases above and is still pretty fast is named ray casting. The idea of the algorithm is pretty simple: Draw a virtual ray from anywhere outside the polygon to your point and count how often it hits a side of the polygon. If the number of hits is even, it's outside of the pol...
What is base 64 encoding used for?
...
In a langange like php, were will binary data come from. We almost always work with string data which is text.
– Cholthi Paul Ttiopic
Sep 5 '16 at 14:02
...
How to use Class in Java?
...is overriding the T declared at Class level;
//So There is no ClassCastException though a is not the type of T declared at MyClass<T>.
private <T> T myMethod1(Object a){
return (T) a;
}
//Runtime ClassCastException will be thrown if a is ...
Why is conversion from string constant to 'char*' valid in C but invalid in C++
...ion has been removed, an explicit conversion still works, so you can add a cast. I would not, however, consider this "fixing" the code.
Truly fixing the code requires changing the type of the pointer to the correct type:
char const *p = "abc"; // valid and safe in either C or C++.
As to why it w...
How to get all columns' names for all the tables in MySQL?
...
<?php
$table = 'orders';
$query = "SHOW COLUMNS FROM $table";
if($output = mysql_query($query)):
$columns = array();
while($result = mysql_fetch_assoc($output)):
$...
How can I order a List?
...in a List<string>, you can either change its declared type, or use a cast. If you're not sure, you can test the type:
if (typeof(List<string>).IsAssignableFrom(ListaServizi.GetType()))
((List<string>)ListaServizi).Sort();
else
{
//... some other solution; there are a few ...
Find and replace with sed in directory and sub directories
... worked for me:
find ./ -type f -exec sed -i '' 's#NEEDLE#REPLACEMENT#' *.php {} \;
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What is a handle in C++?
...ss HANDLE around as an opaque value.
In the code that uses the object, it casts the pointer to a real structure type and uses it:
int doSomething(HANDLE s, int a, int b) {
Something* something = reinterpret_cast<Something*>(s);
return something->doit(a, b);
}
Or it uses it a...
Multi-statement Table Valued Function vs Inline Table Valued Function
...ke 'C_______' then the outer query did a sub-string and int conversion. ie Cast(Substring(2, 2) as int) as CompNo. All looks good except that sql server decided to put my Cast function before the results were filtered and so I get a mind scrambling conversion error. A multi statement table functio...