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How do you keep parents of floated elements from collapsing? [duplicate]

Although elements like <div> s normally grow to fit their contents, using the float property can cause a startling problem for CSS newbies: If floated elements have non-floated parent elements, the parent will collapse. ...
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Ng-model does not update controller value

Probably silly question, but I have my html form with simple input and button: 13 Answers ...
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Textarea onchange detection

How do I detect change event on textarea using javascript? I'm trying to detect how many characters left is available as you type. ...
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How do I watch a file for changes?

...being written by another process which I want to watch for changes. Each time a change occurs I'd like to read the new data in to do some processing on it. ...
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Functional style of Java 8's Optional.ifPresent and if-not-Present?

In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is not present. 12 A...
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How to find out if you're using HTTPS without $_SERVER['HTTPS']

I've seen many tutorials online that says you need to check $_SERVER['HTTPS'] if the server is connection is secured with HTTPS. My problem is that on some of the servers I use, $_SERVER['HTTPS'] is an undefined variable that results in an error. Is there another variable I can check that should...
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SQL JOIN vs IN performance?

I have a case where using a JOIN or an IN will give me the correct results... Which typically has better performance and why? How much does it depend on what database server you are running? (FYI I am using MSSQL) ...
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How to get a cross-origin resource sharing (CORS) post request working

I have a machine on my local lan (machineA) that has two web servers. The first is the in-built one in XBMC (on port 8080) and displays our library. The second server is a CherryPy python script (port 8081) that I am using to trigger a file conversion on demand. The file conversion is triggered b...
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How to read a local text file?

I’m trying to write a simple text file reader by creating a function that takes in the file’s path and converts each line of text into a char array, but it’s not working. ...
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Determine the data types of a data frame's columns

I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame? ...