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Why is my program slow when looping over exactly 8192 elements?

Here is the extract from the program in question. The matrix img[][] has the size SIZE×SIZE, and is initialized at: 2 An...
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Finding Variable Type in JavaScript

In Java, you can use instanceOf or getClass() on a variable to find out its type. 9 Answers ...
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Checking if an object is null in C#

I would like to prevent further processing on an object if it is null. 17 Answers 17 ...
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Add a duration to a moment (moment.js)

... I think you missed a key point in the documentation for .add() Mutates the original moment by adding time. You appear to be treating it as a function that returns the immutable result. Easy mistake to make. :) If you use...
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Converting bool to text in C++

...s a dumb question, but is there any way to convert a boolean value to a string such that 1 turns to "true" and 0 turns to "false"? I could just use an if statement, but it would be nice to know if there is a way to do that with the language or standard libraries. Plus, I'm a pedant. :) ...
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Spring Java Config: how do you create a prototype-scoped @Bean with runtime arguments?

Using Spring's Java Config, I need to acquire/instantiate a prototype-scoped bean with constructor arguments that are only obtainable at runtime. Consider the following code example (simplified for brevity): ...
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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?

Is there a rule-of-thumb for how to best divide data into training and validation sets? Is an even 50/50 split advisable? Or are there clear advantages of having more training data relative to validation data (or vice versa)? Or is this choice pretty much application dependent? ...
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Get raw POST body in Python Flask regardless of Content-Type header

Previously, I asked How to get data received in Flask request because request.data was empty. The answer explained that request.data is the raw post body, but will be empty if form data is parsed. How can I get the raw post body unconditionally? ...
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How does delete[] know it's an array?

Alright, I think we all agree that what happens with the following code is undefined, depending on what is passed, 16 Answe...
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Copy a table from one database to another in Postgres

I am trying to copy an entire table from one database to another in Postgres. Any suggestions? 19 Answers ...