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How can you find the height of text on an HTML canvas?

...has a context.measureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height. ...
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Difference between HashMap, LinkedHashMap and TreeMap

...ee classes implement the Map interface and offer mostly the same functionality. The most important difference is the order in which iteration through the entries will happen: HashMap makes absolutely no guarantees about the iteration order. It can (and will) even change completely when new element...
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Why is Multiple Inheritance not allowed in Java or C#?

I know that multiple inheritance is not allowed in Java and C#. Many books just say, multiple inheritance is not allowed. But it can be implemented by using interfaces. Nothing is discussed about why it is not allowed. Can anybody tell me precisely why it is not allowed? ...
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Receive result from DialogFragment

I am using DialogFragments for a number of things: choosing item from list, entering text. 13 Answers ...
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How do you determine what technology a website is built on? [closed]

Quite often I come across a nice looking or functional website, and wonder what technology was used to create it. What techniques are available to figure out what a particular website was built with? ...
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What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get

How can I find out which method is best for a situation? Can anybody provide some examples to know the difference in terms of functionality and performance? ...
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What is the difference between the | and || or operators?

...ke the & and && operator, the double Operator is a "short-circuit" operator. For example: if(condition1 || condition2 || condition3) If condition1 is true, condition 2 and 3 will NOT be checked. if(condition1 | condition2 | condition3) This will check conditions 2 and 3, even if 1...
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JSON formatter in C#?

...oking for a function that will take a string of Json as input and format it with line breaks and indentations. Validation would be a bonus, but isn't necessary, and I don't need to parse it into an object or anything. ...
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Move branch pointer to different commit without checkout

To move the branch pointer of a checked out branch, one can use the git reset --hard command. But how to move the branch pointer of a not-checked out branch to point at a different commit (keeping all other stuff like tracked remote branch)? ...
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How do I make text bold in HTML?

I'm trying to make some text bold using HTML, but I'm struggling to get it to work. 10 Answers ...