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Can dplyr package be used for conditional mutating?
... a == 4 | a == 3 | c == 4 ~ 3
))
Using dplyr 0.7.4
The manual: http://dplyr.tidyverse.org/reference/case_when.html
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text-overflow:ellipsis in Firefox 4? (and FF5)
... use their existing solution.
This should be available for fiddling here:
http://jsfiddle.net/kn9Qg/130/
HTML:
<div id="test">hello World</div>
CSS:
#test {
margin-top: 20px;
width: 68px;
overflow: hidden;
white-space: nowrap;
border: 1px solid green;
}
J...
How to make an Android Spinner with initial text “Select One”?
...
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
style="?android:attr/spinnerItemStyle"
android:singleLine="true"
android:layout_width="match_parent"
android:layout_height="wrap_c...
START_STICKY and START_NOT_STICKY
...e background of this a lot better than the official documentation.
Source: http://android-developers.blogspot.com.au/2010/02/service-api-changes-starting-with.html
The key part here is a new result code returned by the function,
telling the system what it should do with the service if its process
i...
How can I profile Python code line-by-line?
...e (you can connect to a running program and get statistics from it).
See: http://www.pyvmmonitor.com/
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Microsoft Roslyn vs. CodeDom
...slyn state and the different levels of access and control it provides, see http://msdn.microsoft.com/en-us/hh500769
UPDATE
Microsoft just made a new CTP available with additional features and lots of API changes/additions. For details see here.
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Can JSON start with “[”?
... are curly brackets and square brackets respectively.
Edit
And from here: http://www.ietf.org/rfc/rfc4627.txt
A JSON text is a sequence of tokens.
The set of tokens includes six
structural characters, strings,
numbers, and three literal names.
A JSON text is a serialized object or a...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
... document appears out of date many of the points are probably still good;
http://web.utk.edu/~jplyon/sqlite/SQLite_optimization_FAQ.html
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edited May 23 '17 at 11:54
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How can I generate a diff for a single file between two branches in github
...ose tags actually point to commits, the Url format would be something like
https://github.com/{user}/{repository}/compare/{from-tag}...{until-tag}
As an example, https://github.com/libgit2/libgit2sharp/compare/v0.9.0...v0.9.5 shows the diff between two versions of the LibGit2Sharp project. This diff...
Speed up the loop operation in R
... all this, you just need more computing power. Look into parallelization (http://cran.r-project.org/web/views/HighPerformanceComputing.html) or even GPU-based solutions (gpu-tools).
Links to other guidance
http://www.noamross.net/blog/2013/4/25/faster-talk.html
...