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How to check if a String is numeric in Java
...
try {
Double.parseDouble(str);
return true;
} catch(NumberFormatException e){
return false;
}
}
However, if you're calling this function a lot, and you expect many of the checks to fail due to not being a number then performance of this mechanism will not be great, sin...
How do I pass JavaScript variables to PHP?
I want to pass JavaScript variables to PHP using a hidden input in a form.
14 Answers
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Can every recursion be converted into iteration?
...e a programming system so advanced as to treat a recursive definition of a formula as an invitation to memoize prior results, thus offering the speed benefit without the hassle of telling the computer exactly which steps to follow in the computation of a formula with a recursive definition. Dijkstra...
What is the difference between Xamarin.Form's LayoutOptions, especially Fill and Expand?
In Xamarin.Forms every View has the two properties HorizontalOptions and VerticalOptions . Both are of type LayoutOptions and can have one of the following values:
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Placeholder in IE9
...lso it doesn't submit the placeholder text as a value when you submit your form (... a real pain I found with other plugins).
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Do checkbox inputs only post data if they're checked?
... browsers to only send the checkbox input value data if it is checked upon form submission?
12 Answers
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jQuery AJAX file upload PHP
...loads directory. The jQuery ajax method (running in the browser) sends the form data to the server, then a script on the server handles the upload. Here's an example using PHP.
Your HTML is fine, but update your JS jQuery script to look like this:
$('#upload').on('click', function() {
var file...
Get raw POST body in Python Flask regardless of Content-Type header
...r explained that request.data is the raw post body, but will be empty if form data is parsed. How can I get the raw post body unconditionally?
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How to get body of a POST in php?
...late_raw_post_data. php://input is not available with
enctype="multipart/form-data".
Specifically you'll want to note that the php://input stream, regardless of how you access it in a web SAPI, is not seekable. This means that it can only be read once. If you're working in an environment where l...
Implementing MVC with Windows Forms
...d a good example on how to completely implement the MVC pattern in Windows Forms?
6 Answers
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