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Convert a list to a data frame
...hich in turn yields FALSE as its default.
Assuming your list of lists is called l:
df <- data.frame(matrix(unlist(l), nrow=length(l), byrow=T))
The above will convert all character columns to factors, to avoid this you can add a parameter to the data.frame() call:
df <- data.frame(matrix(unl...
Difference between framework and static library in xcode4, and how to call them
... is as a framework. To create a "static" framework for iOS, you can essentially take a normal framework and replace the binary with your compiled static library. This is how I distribute one of my libraries, Resty and is how I intend to distribute my libraries in the future.
You may want to look at...
How to change string into QString?
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This should actually be avoided in my opinion. If the version of the standard library QT was compiled with is somehow different from what you're compiling with, you're going to have trouble. In creates an unnecessary dependency between QT an...
AWS Error Message: A conflicting conditional operation is currently in progress against this resourc
...ket - it went by default to US region (used AWSCLI)
realized, the bucket shall go to EU region and deleted it (used AWS console)
(few minutes later) tried to create the bucket, specifying the EU region
At step 3, AWS console has shown me the error message from title of your question.
So I guess, ...
Algorithm for classifying words for hangman difficulty levels as “Easy”,“Medium”, or “Hard”
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1. Introduction
Here's a way to approach this problem systematically: if you have an algorithm that plays hangman well, then you can take the difficulty of each word to be the number of wrong guesses that your program would take if guessing that word.
2. Aside on hangman strategy
There'...
Java: splitting a comma-separated string but ignoring commas in quotes
...ble quote" So, if String line = "equals: =,\"quote: \"\"\",\"comma: ,\"", all you need to do is strip off the extraneous double quote characters.
– Paul Hanbury
Nov 18 '09 at 17:41
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VC窗口刷新InvalidateRect和UpdateWindow - C/C++ - 清泛网 - 专注C/C++及内核技术
...INT messages. If an application processes a WM_PAINT message but does not call BeginPaint or otherwise clear the update region, the application continues to receive WM_PAINT messages as long as the region is not empty. In all cases, an application must clear the update region before returning from t...
GUI not working after rewriting to MVC
...me concepts.
Addendum: I've modified the original example to show how MVC allows one to enhance the View without changing the nature of the Model.
Addendum: As @akf observes, MVC hinges on the observer pattern. Your Model needs a way to notify the View of changes. Several approaches are widely use...
Is there a way to change context to iframe in javascript console?
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Chrome 15 allows you to change the scope of the console. On the bottom of the console, next to the clear console button, there is a menu that says <top frame> which will give a list of available frames:
Firefox has a similar ...
Is it possible to have nested templates in Go using the standard library?
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Yes it is possible. A html.Template is actually a set of template files. If you execute a defined block in this set, it has access to all the other blocks defined in this set.
If you create a map of such template sets on your own, you have basically the same flexibil...