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Callback functions in C++
In C++, when and how do you use a callback function?
10 Answers
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Unicode equivalents for \w and \b in Java regular expressions?
...ain. It’s available as an embeddable (?U) for inside the pattern, so you can use it with the String class’s wrappers, too. It also sports corrected definitions for various other properties, too. It now tracks The Unicode Standard, in both RL1.2 and RL1.2a from UTS#18: Unicode Regular Expressio...
How do I make my GUI behave well when Windows font scaling is greater than 100%
...s control panel (like 125%, or 150%) then there are problems in a VCL application, every time something has been set pixelwise.
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The static keyword and its various uses in C++
... is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work.
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How does the “this” keyword work?
... whenever establishing an execution context in one of only three different cases:
1. Initial global execution context
This is the case for JavaScript code that is evaluated at the top-level, e.g. when directly inside a <script>:
<script>
alert("I'm evaluated in the initial global execu...
Why is it slower to iterate over a small string than a small list?
...t fault. Neither method creates a new object, as one-character strings are cached.
The difference is unobvious, but is likely created from a greater number of checks on string indexing, with regards to the type and well-formedness. It is also quite likely thanks to the need to check what to return.
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What is a correct mime type for docx, pptx etc?
...MIME types for HTTP content streaming:
Extension MIME Type
.doc application/msword
.dot application/msword
.docx application/vnd.openxmlformats-officedocument.wordprocessingml.document
.dotx application/vnd.openxmlformats-officedocument.wordprocessingml.template
.docm applica...
print call stack in C or C++
Is there any way to dump the call stack in a running process in C or C++ every time a certain function is called? What I have in mind is something like this:
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What characters can be used for up/down triangle (arrow without stem) for display in HTML?
...ML or ASCII character which is a triangle pointing up or down so that I can use it as a toggle switch.
19 Answers
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What optimizations can GHC be expected to perform reliably?
GHC has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances.
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