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What is a “callback” in C and how are they implemented?

...y're implemented using function pointers. Here's an example: void populate_array(int *array, size_t arraySize, int (*getNextValue)(void)) { for (size_t i=0; i<arraySize; i++) array[i] = getNextValue(); } int getNextRandomValue(void) { return rand(); } int main(void) { int m...
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(-2147483648> 0) returns true in C++?

-2147483648 is the smallest integer for integer type with 32 bits, but it seems that it will overflow in the if(...) sentence: ...
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“The breakpoint will not currently be hit. The source code is different from the original version.”

... Using clean does not always work. I had to manually delete everything in my bin folder to get it to work again. – Carra May 4 '12 at 13:53 3 ...
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Unresolved specs during Gem::Specification.reset:

...t turned out to be a missing line in the gemspec file: $:.push File.expand_path("../lib", __FILE__) This line is normally at the top of the file (in many of the gems I have recently been working in) and I had commented it out to see why. ...
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.trim() in JavaScript not working in IE

...han.com/archives/faster-trim-javascript – Daniel Vassallo Feb 22 '10 at 0:53 92 ...
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if checkbox is checked, do this

...me power of jQuery to access properties of an element. The article specifically treats the use of .attr("id") but in the case that #checkbox is an <input type="checkbox" /> element the issue is the same for $(...).attr('checked') (or even $(...).is(':checked')) vs. this.checked. ...
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How to limit UITableView row reordering to a section

... hitting my head over this one, and google was turning up nothing. I eventually worked it out and thought I'd write it up here for the sake of the next person. ...
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Why can't I make a vector of references?

...m reference something else later). Other non-assignable types are also not allowed as components of containers, e.g. vector<const int> is not allowed. share | improve this answer | ...
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How to upload a file to directory in S3 bucket using boto

...mmand prompt and type aws configure, enter your info and you will automatically connect with boto3. Check boto3.readthedocs.io/en/latest/guide/quickstart.html – seeiespi Aug 28 '18 at 21:31 ...
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ASP.NET MVC partial views: input name prefixes

...he child class (which must be stored in a subfolder of the view directory called EditorTemplates): <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<MvcLearner.Models.TwoPart>" %> <%= Html.LabelFor(birthday => birthday.Day) %><br /> <%= Html.EditorFor...