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Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
...o some programmers and is just not worth it in my view. For loops are an exception, as the use of the increment operator is idiomatic and thus always clear.
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What is “X-Content-Type-Options=nosniff”?
...specting this header, including Chrome/Chromium, Edge, IE >= 8.0, Firefox >= 50 and Opera >= 13. See :
https://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx?Redirected=true
Sending the new X-Content-Type-Options response header with the value
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Adding a column to a data.frame
...s. The quotes below come from the "Details" section of the relevant help text, [[.data.frame.
Data frames can be indexed in several modes. When [ and [[ are used with a single vector index (x[i] or x[[i]]), they index the data frame as if it were a list.
my.dataframe["new.col"] <- a.vector
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How do I check if a variable exists in a list in BASH
...k the validity of a user input.
I want to match the input (say variable x ) to a list of valid values.
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Xcode build failure “Undefined symbols for architecture x86_64”
An Xcode beginner's question:
24 Answers
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LINQ Orderby Descending Query
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You need to choose a Property to sort by and pass it as a lambda expression to OrderByDescending
like:
.OrderByDescending(x => x.Delivery.SubmissionDate);
Really, though the first version of your LINQ statement should work. Is t.Delivery.SubmissionDate actually populated with vali...
In Python, how do I split a string and keep the separators?
Here's the simplest way to explain this. Here's what I'm using:
13 Answers
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How can I remove non-ASCII characters but leave periods and spaces using Python?
I'm working with a .txt file. I want a string of the text from the file with no non-ASCII characters. However, I want to leave spaces and periods. At present, I'm stripping those too. Here's the code:
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Java 8 NullPointerException in Collectors.toMap
The Java 8 Collectors.toMap throws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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Select a Dictionary with LINQ
I have used the "select" keyword and extension method to return an IEnumerable<T> with LINQ, but I have a need to return a generic Dictionary<T1, T2> and can't figure it out. The example I learned this from used something in a form similar to the following:
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