MySQL storing double space " " as question mark "?"
Date : March 29 2020, 07:55 AM
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Swift variable decorations with "?" (question mark) and "!" (exclamation mark)
Date : March 29 2020, 07:55 AM
will be helpful for those in need In a type declaration the ! is similar to the ?. Both are an optional, but the ! is an " implicitly unwrapped" optional, meaning that you do not have to unwrap it to access the value (but it can still be nil). This is basically the behavior we already had in objective-c. A value can be nil, and you have to check for it, but you can also just access the value directly as if it wasn't an optional (with the important difference that if you don't check for nil you'll get a runtime error) // Cannot be nil
var x: Int = 1
// The type here is not "Int", it's "Optional Int"
var y: Int? = 2
// The type here is "Implicitly Unwrapped Optional Int"
var z: Int! = 3
// you can add x and z
x + z == 4
// ...but not x and y, because y needs to be unwrapped
x + y // error
// to add x and y you need to do:
x + y!
// but you *should* do this:
if let y_val = y {
x + y_val
}
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Question mark in regex: difference between Pattern.compile("\"title\":\"(.*?)\""); and Pat
Tag : java , By : artifex
Date : March 29 2020, 07:55 AM
I wish this helpful for you There are 2 things here : () --> Specifies a capturing group. So, if you want to capture something and want to refer to it later, you can use (what you want to capture here). Without the braces, you don't capture the data. Pattern p = Pattern.compile("abc(.*?)");
Matcher m = p.matcher("abc");
while (m.find()) {
System.out.println("hi");
System.out.println("group1 : " + m.group(1));
}
hi
group1 :
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How to pass question mark as parameter to history.pushState("","","?like_this")
Date : March 29 2020, 07:55 AM
I hope this helps . window.history.pushState("","","?test=yes")will do it. See http://jsfiddle.net/pc0Lhkuc/, the problem is location.pathname is a DOMString containing an initial '/' followed by the path of the URL, you should use location.search instead, which is a DOMString containing a '?' followed by the parameters or "querystring" of the URL.
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How to remove Query String "?" (question mark) from URL (Using Wordpress)
Date : March 29 2020, 07:55 AM
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