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Are there any reasons to use private properties in C#?
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I use them if I need to cache a value and want to lazy load it.
private string _password;
private string Password
{
get
{
if (_password == null)
{
_password = CallExpensiveOperation();
}
return _password;
}
}
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In C#, why is String a reference type that behaves like a value type?
A String is a reference type even though it has most of the characteristics of a value type such as being immutable and having == overloaded to compare the text rather than making sure they reference the same object.
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Regex select all text between tags
... the single/double quote characters with ` in order to put the regexp in a string.
– David Zwart
Sep 14 '18 at 10:58
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Get the full URL in PHP
.../$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
(Note that the double quoted string syntax is perfectly correct)
If you want to support both HTTP and HTTPS, you can use
$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVE...
Executing multi-line statements in the one-line command-line?
...rehension, lambdas, sys.stdout.write, the "map" builtin, and some creative string interpolation, you can do some powerful one-liners.
The question is, how far do you want to go, and at what point is it not better to write a small .py file which your makefile executes instead?
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Is there a command to refresh environment variables from the command prompt in Windows?
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And annoyingly, extra instances of cmd.exe don't count. They all have to be killed before the change is reflected in any new cmd.exe's.
– Mike F
Oct 5 '08 at 8:08
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Difference between int32, int, int32_t, int8 and int8_t
...ktop/server machines, it probably won't be.
Oops -- missed the part about char. You'd use int8_t instead of char if (and only if) you want an integer type guaranteed to be exactly 8 bits in size. If you want to store characters, you probably want to use char instead. Its size can vary (in terms of ...
What does the unary plus operator do?
... answered Oct 11 '10 at 2:07
Charles SalviaCharles Salvia
47.1k1212 gold badges116116 silver badges137137 bronze badges
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Method to Add new or update existing item in Dictionary
...work fine in multi-threaded context. It however is not thread-safe without extra synchronization.
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How can I pad a value with leading zeros?
...n't use this solution!
Potentially outdated: ECMAScript 2017 includes String.prototype.padStart and Number.prototype.toLocaleString is there since ECMAScript 3.1. Example:
var n=-0.1;
n.toLocaleString('en', {minimumIntegerDigits:4,minimumFractionDigits:2,useGrouping:false})
...will outpu...