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How do I create a random alpha-numeric string in C++?
I'd like to create a random string, consisting of alpha-numeric characters. I want to be able to be specify the length of the string.
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How to convert String to Long in Kotlin?
So, due to lack of methods like Long.valueOf(String s) I am stuck.
11 Answers
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What is the optimal length for an email address in a database?
Here is an extracted portion of my query, reflecting the EMAIL_ADDRESS column data type and property:
8 Answers
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What causes java.lang.IncompatibleClassChangeError?
I'm packaging a Java library as a JAR, and it's throwing many java.lang.IncompatibleClassChangeError s when I try to invoke methods from it. These errors seem to appear at random. What kinds of problems could be causing this error?
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Inline labels in Matplotlib
In Matplotlib, it's not too tough to make a legend ( example_legend() , below), but I think it's better style to put labels right on the curves being plotted (as in example_inline() , below). This can be very fiddly, because I have to specify coordinates by hand, and, if I re-format the plot, I pro...
Why do Lua arrays(tables) start at 1 instead of 0?
I don't understand the rationale behind the decision of this part of Lua. Why does indexing start at 1? I have read (as many others did) this great paper . It seems to me a strange corner of a language that is very pleasant to learn and program. Don't get me wrong, Lua is just great but there has t...
How to update a plot in matplotlib?
I'm having issues with redrawing the figure here. I allow the user to specify the units in the time scale (x-axis) and then I recalculate and call this function plots() . I want the plot to simply update, not append another plot to the figure.
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What does it mean to “program to an interface”?
I have seen this mentioned a few times and I am not clear on what it means. When and why would you do this?
32 Answers
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Difference between >>> and >>
What is the difference between >>> and >> operators in Java?
7 Answers
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Asynchronously wait for Task to complete with timeout
I want to wait for a Task<T> to complete with some special rules:
If it hasn't completed after X milliseconds, I want to display a message to the user.
And if it hasn't completed after Y milliseconds, I want to automatically request cancellation .
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