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Remove Elements from a HashSet while Iterating [duplicate]
So, if I try to remove elements from a Java HashSet while iterating, I get a ConcurrentModificationException . What is the best way to remove a subset of the elements from a HashSet as in the following example?
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The cause of “bad magic number” error when loading a workspace and how to avoid it?
I tried to load my R workspace and received this error:
9 Answers
9
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When to use MyISAM and InnoDB? [duplicate]
...pdated and as a result it performs very fast read operations. If your read to write(insert|update) ratio is less than 15% its better to use MyISAM.
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How to write string literals in python without having to escape them?
Is there a way to declare a string variable in python such that everything inside of it is automatically escaped, or has its literal character value?
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data.frame rows to a list
I have a data.frame which I would like to convert to a list by rows, meaning each row would correspond to its own list elements. In other words, I would like a list that is as long as the data.frame has rows.
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Why doesn't c++ have &&= or ||= for booleans?
... operations follow a well-defined mapping, which is effectively equivalent to the logical operations, as long as both operands are of type bool.1
Contrary to what other people have said here, a bool in C++ must never have a different value such as 2. When assigning that value to a bool, it will be ...
Determine font color based on background color
Given a system (a website for instance) that lets a user customize the background color for some section but not the font color (to keep number of options to a minimum), is there a way to programmatically determine if a "light" or "dark" font color is necessary?
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How to load an ImageView by URL in Android? [closed]
... new java.net.URL(urldisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return mIcon11;
}
protected void onPostExecute(Bitmap result) {
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Auto start node.js server on boot
Can any node.js experts tell me how I might configure node JS to autostart a server when my machine boots?
I'm on Windows
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Working with README.md on github.com [closed]
I am not too familiar with the lightweight markup language used by github when updating README files.
7 Answers
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