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setState vs replaceState in React.js

I am new to React.js Library and I was going over some of the tutorials and I came across: 4 Answers ...
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PowerShell: Store Entire Text File Contents in Variable

I'd like to use PowerShell to store the entire contents of a text file (including the trailing blank line that may or may not exist) in a variable. I'd also like to know the total number of lines in the text file. What's the most efficient way to do this? ...
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How to merge 2 JSON objects from 2 files using jq?

I'm using the jq tools (jq-json-processor) in shell script to parse json. 6 Answers ...
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Why is Python 3.x's super() magic?

In Python 3.x, super() can be called without arguments: 1 Answer 1 ...
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Why does String.valueOf(null) throw a NullPointerException?

according to the documentation, the method String.valueOf(Object obj) returns: 4 Answers ...
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Is it OK to leave a channel open?

Is it OK to leave a Go channel open forever (never close the channel) if I never check for its state? Will it lead to memory leaks? Is the following code OK? ...
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Routing: The current request for action […] is ambiguous between the following action methods

I have a View called Browse.chtml , where the user can enter a search term, or leave the search term blank. When entering the search term, I want to direct the page to http://localhost:62019/Gallery/Browse/{Searchterm} and when nothing is entered, I want to direct the browser to http://localho...
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String formatting in Python 3

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Python: Select subset from list based on index set

I have several lists having all the same number of entries (each specifying an object property): 5 Answers ...
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What does glLoadIdentity() do in OpenGL?

I'm new to OpenGL and I'm a little overwhelmed with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do. ...