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C# naming convention for constants?
...++ Standard Tempate Library has adopted lower case for constants e.g. std::string::npos (cplusplus.com/reference/string/string/npos). So ALL_CAPS is only for macros and preprocessor directives- which makes it look even more stupider in C#.
– Richard Dingwall
No...
How to compare two Dates without the time portion?
...
I don't think that would work, even if converting to Strings was a good idea. The == operator doesn't necessarily return true for equivalent Strings (use equals()). You certainly can't use the other comparison operators you mentioned, either.
– harto
...
Why do we need virtual functions in C++?
... virtual modifier on/off to see what happens
//virtual
std::string Says() { return "?"; }
};
class Dog: public Animal
{
public: std::string Says() { return "Woof"; }
};
void test()
{
Dog* d = new Dog();
Animal* a = d; // refer to Dog instance with Animal pointer
...
Set time to 00:00:00
... new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
public static void main(String[] args)
{
Calendar now = Calendar.getInstance();
now.set(Calendar.HOUR, 0);
now.set(Calendar.MINUTE, 0);
now.set(Calendar.SECOND, 0);
System.out.println(sdf.format(now.getTim...
Python != operation vs “is not”
... but are not identical. (They are not the same object in memory.)
Example: Strings
>>> greeting = "It's a beautiful day in the neighbourhood."
>>> a = unicode(greeting)
>>> b = unicode(greeting)
>>> a is b
False
>>> a == b
True
Note: I use unicode stri...
WKWebView in Interface Builder
...func viewDidLoad() {
super.viewDidLoad()
if let url = URL(string: "https://google.com") {
let req = URLRequest(url: url)
webView?.load(req)
}
}
}
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...
Calculate the execution time of a method
....Diagnostics;
using System.Threading;
class Program
{
static void Main(string[] args)
{
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
Thread.Sleep(10000);
stopWatch.Stop();
// Get the elapsed time as a TimeSpan value.
TimeSpan ts = ...
Boolean literals in PowerShell
...ional statements. Most non-null objects are true, for example. null, empty strings, empty arrays and the number 0 are false.
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How do I convert Word files to PDF programmatically? [closed]
...ane.Pages)
{
var bits = p.EnhMetaFileBits;
var target = path1 +j.ToString()+ "_image.doc";
try
{
using (var ms = new MemoryStream((byte[])(bits)))
{
var image = System.Drawing.Image.FromStream(ms);
var pngTarget = Path.ChangeExtension(target, ...
How to encrypt/decrypt data in php?
...given_hash, $db_hash)) {
// user password verified
}
// constant time string compare
function isEqual($str1, $str2)
{
$n1 = strlen($str1);
if (strlen($str2) != $n1) {
return false;
}
for ($i = 0, $diff = 0; $i != $n1; ++$i) {
$diff |= ord($str1[$i]) ^ ord($str2[$...