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What's the fuss about Haskell? [closed]
...n SO everyone seems to love that language. Being good at Haskell seems somewhat like the hallmark of a genius programmer.
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Does anyone know what the new Exit icon is used for when editing storyboards using Xcode 4.5?
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Thanks, I was reading this just to learn what the "Green Exit" was about, only to find out it resolve a problem for me. I had 2 view controllers separated by a TabBar controller and a navigation controller, and "Pop" didn't work to return backwards. This took 2 min...
How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
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Have you tried cat /proc/meminfo? You can then awk or grep out what you want, MemTotal e.g.
awk '/MemTotal/ {print $2}' /proc/meminfo
or
cat /proc/meminfo | grep MemTotal
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Applying a function to every row of a table using dplyr?
...by(1:n()) %>% mutate(Max.Len= max(Sepal.Length,Petal.Length))
This is what the 1 did in adply.
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Java switch statement: Constant expression required, but it IS constant
...compile-time constant expressions), declaring the variable as final may be what is needed.
You could change your code to use an enum rather than int constants, but that brings another couple of different restrictions:
You must include a default case, even if you have case for every known value of...
Will console.log reduce JavaScript execution performance?
...ge on using the developer tools can read your debug messages. Depending on what you are logging, this may not be a desirable behavior.
One of the best approaches is to wrap the console.log in one of your methods, and where you can check for conditions and execute it. In a production build, you can ...
foreach with index [duplicate]
...Enumerable<T>.ElementAt(i) is O(n) (see Schlemiel the Painter). And what if you have a lazy enumerable that's expensive to evaluate and contains a huge number of records? With a for loop, you have to wait for IEnumerable<T>.Count() to return before you can start processing the records....
Get value from JToken that may not exist (best practices)
What's the best practice for retrieving JSON values that may not even exist in C# using Json.NET ?
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Swift and mutating struct
...For C/C++ programmers, this is also very familiar concept. This is exactly what const keyword do in C/C++.
Also, immutable value can be very nicely optimised. In theory, Swift compiler (or LLVM) can perform copy-elision on values passed by let, just like in C++. If you use immutable struct wisely, ...
How to create an object for a Django model with a many to many field?
...ire any pre or post-processing on the data with save() methods or signals. What you insert is exactly what will be in the DB
You can do this without specifying a "through" model on the field. For completeness, the example below creates a blank Users model to mimic what the original poster was askin...