floating | 易学教程

How do I get a float value when dividing two integers? (PHP)

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问题 Hi I am trying to divide two integers ex: 12/13 but I always get a whole integer 1 not a decimal number. I tried type casting the values to float before hand with no success. Basically all I want is a decimal result like: 0.923... $x = 12; $y = 13; echo $value = $x / $y; //Would like to see 0.923 not 1 回答1: Under normal circumstances your code should return the floating value 0.923076 ... The reason you get a rounded integer might be because you have your ini setting for "precision" set to 0

How to float an element left with full height of the wrapper?

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问题 HTML: <div class="wrapper"> <div class="left"> Foo </div> <div class="right"> Text row 1 </div> </div> <div class="wrapper"> <div class="left"> Foo Bar </div> <div class="right"> Text row 1<br> Text row 2<br> Text row 3 </div> </div> CSS: .wrapper { overflow:hidden; } .left { width:80px; float:left; height:100%; } How can I give the floating div the full height of the wrapper (whose height is varying)? is it possible without jQuery? Test: http://jsfiddle.net/Q6B43/ 回答1: The display: table

Moving Floating Action Button up and down to avoid getting blocked by a snackbar

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问题 I'm using this library to implement a floating action bar and I can't seem to find a way to move the button when a snackbar appears on screen. Is it even possible with that library? 回答1: To anyone looking out for answer in future.. Coordinator Layout used as Parent Layout of Floating Action Button will handle the animation effect for you automatically. The floating action button has a default behavior that detects Snackbar views being added and animates the button above the height of the

How can I have a floating image (right aligned) with text that wraps around the image in Android Layout?

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问题 It's kind of hard to explain, but an example of what I'm wanting to accomplish is like this: Here is some text | image | that is printed | | out in a view and --------- it is wrapped around an image that is floating and right aligned. I thought about generating the layout in html and using a web view, but I need to be able to perform an action when the user clicks on the image. Does anyone have any ideas? Thanks in advance, groomsy 回答1: first you must work with some html code, creating a

Convert double to float in Java

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问题 I am facing an issue related to converting double to float . Actually, I store a float type, 23423424666767 , in a database, but when we get data from the database in the below code, getInfoValueNumeric() , it's of double type. The value we get is in the 2.3423424666767E13 form. So how do we get a float format data like 23423424666767 ? 2.3423424666767E13 to 23423424666767 public void setInfoValueNumeric(java.lang.Double value) { setValue(4, value); } @javax.persistence.Column(name =

Set precision of std::to_string when converting floating point values [duplicate]

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This question already has an answer here: The precision of std::to_string(double) 3 answers In C++11, std:: to_string defaults to 6 decimal places when given an input value of type float or double . What is the recommended, or most elegant, method for changing this precision? hmjd There is no way to change the precision via to_string() but the setprecision IO manipulator could be used instead: #include <sstream> template <typename T> std::string to_string_with_precision(const T a_value, const int n = 6) { std::ostringstream out; out.precision(n); out << std::fixed << a_value; return out.str();

Set precision of std::to_string when converting floating point values [duplicate]

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问题 This question already has an answer here: The precision of std::to_string(double) 3 answers In C++11, std::to_string defaults to 6 decimal places when given an input value of type float or double . What is the recommended, or most elegant, method for changing this precision? 回答1: There is no way to change the precision via to_string() but the setprecision IO manipulator could be used instead: #include <sstream> template <typename T> std::string to_string_with_precision(const T a_value, const