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Detect if homebrew package is installed
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You can use
brew ls --versions myformula
to output the installed versions of the respective formula. If the formula is not installed, the output will be empty.
When using a recent versions of homebrew, which you can get with brew update, you can just run t...
Firefox Web Console Disabled?
...is happens when the page itself defines a global variable called console, for example. If the page is browser-sniffing to decide whether to define it, the behavior could differ in different browsers.
In the case of Firefox it also happens when Firebug is installed and its console is enabled, since...
How exactly does the callstack work?
...er understanding of how the low level operations of programming languages work and especially how they interact with the OS/CPU. I've probably read every answer in every stack/heap related thread here on Stack Overflow, and they are all brilliant. But there is still one thing that I didn't fully un...
What is difference between XML Schema and DTD?
... XML schema and DTD (document type definition), and why the XML schema is more powerful compared to DTD.
12 Answers
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Fastest way to determine if an integer is between two integers (inclusive) with known sets of values
Is there a faster way than x >= start && x <= end in C or C++ to test if an integer is between two integers?
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How to configure Ruby on Rails with no database?
It would be convenient to use Ruby on Rails for a small website project that has no current need for a database. I know I could create an empty database in MySQL and go from there, but does anyone know a better way to run Rails without a database?
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ARC and bridged cast
With ARC, I can no longer cast CGColorRef to id . I learned that I need to do a bridged cast. According clang docs :
3 ...
What is the difference between memoization and dynamic programming?
...e same computation is needed again.
Dynamic programming is a technique for solving problems of recursive nature, iteratively and is applicable when the computations of the subproblems overlap.
Dynamic programming is typically implemented using tabulation, but can also be implemented using memo...
NAnt or MSBuild, which one to choose and when?
...on this week. Here's what I've been able to determine:
NAnt:
Cross-platform (supports Linux/Mono). It may be handy for installing a web site to multiple targets (that is, Linux Apache and Windows IIS), for example.
95% similar in syntax to Ant (easy for current Ant users or Java builders to pick...
Routing: The current request for action […] is ambiguous between the following action methods
...have a View called Browse.chtml , where the user can enter a search term, or leave the search term blank. When entering the search term, I want to direct the page to http://localhost:62019/Gallery/Browse/{Searchterm} and when nothing is entered, I want to direct the browser to http://localhost...