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Float vs Decimal in ActiveRecord
...d data types confuse me. Err, often. One of my eternal questions is, for a given case,
3 Answers
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Difference between == and ===
...rator checks if the references point the same instance, "identical to"
Long Answer:
Classes are reference types, it is possible for multiple constants and variables to refer to the same single instance of a class behind the scenes. Class references stay in Run Time Stack (RTS) and their instances ...
Beyond Stack Sampling: C++ Profilers
The date is 12/02/10. The days before Christmas are dripping away and I've pretty much hit a major road block as a windows programmer. I've been using AQTime, I've tried sleepy, shiny, and very sleepy, and as we speak, VTune is installing. I've tried to use the VS2008 profiler, and it's been posi...
When to use references vs. pointers
I understand the syntax and general semantics of pointers versus references, but how should I decide when it is more-or-less appropriate to use references or pointers in an API?
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Vim - how to run a command immediately when starting vim?
I have a plugin (FindFile.vim) that needs to run :FindFileCache . whenever I start vim to gather a file cache for quick opening.. I have to run this every time I start vim though.
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MIN and MAX in C
... if at all?
They aren't.
What is the best way to implement these, as generically and type safe as possible (compiler extensions/builtins for mainstream compilers preferred).
As functions. I wouldn't use macros like #define MIN(X, Y) (((X) < (Y)) ? (X) : (Y)), especially if you plan to dep...
How to use the 'sweep' function
When I look at the source of R Packages, i see the function sweep used quite often.
Sometimes it's used when a simpler function would have sufficed (e.g., apply ),
other times, it's impossible to know exactly what it's is doing without
spending a fair amount of time to step through the code block...
Prevent body scrolling but allow overlay scrolling
I've been searching for a "lightbox" type solution that allows this but haven't found one yet (please, suggest if you know of any).
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Using member variable in lambda capture list inside a member function
The following code compiles with gcc 4.5.1 but not with VS2010 SP1:
4 Answers
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Write a program to find 100 largest numbers out of an array of 1 billion numbers
I recently attended an interview where I was asked "write a program to find 100 largest numbers out of an array of 1 billion numbers."
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