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How to use a variable to specify column name in ggplot
...t will remain around for a long time).
The idiomatic way now would be to convert to a symbol the string that the variable contains, using sym()(which is almost the same as base aliases as.name() / as.symbol()), and unquote it using !!
Simulating OP's data we can do :
library(tidyverse)
rates.by....
'uint32_t' identifier not found error
...
This type is defined in the C header <stdint.h> which is part of the C++11 standard but not standard in C++03. According to the Wikipedia page on the header, it hasn't shipped with Visual Studio until VS2010.
In the meantime, you could probably fake up your own...
Why NSUserDefaults failed to save NSMutableDictionary in iOS?
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When I need the data, I read out the NSData, and use NSKeyedUnarchiver to convert NSData back to the object.
It is a little cumbersome, because i need to convert to/from NSData everytime, but it just works.
Here is one example per request:
Save:
NSUserDefaults *defaults = [NSUserDefaults stand...
Nested fragments disappear during transition animation
...away the image will simulate their presence. Also, I don't see loosing the interactivity with the nested fragment's views as a problem because I don't think you would want the user to act on them when they are just in the process of being removed(probably as a user action as well).
I've made a litt...
Different font size of strings in the same TextView
...ativeSizeSpan.
Just get the dimension in pixels of the desired text size
int textSize1 = getResources().getDimensionPixelSize(R.dimen.text_size_1);
int textSize2 = getResources().getDimensionPixelSize(R.dimen.text_size_2);
and then create a new AbsoluteSpan based on the text
String text1 = "Hi"...
Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
10 Answers
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get list of pandas dataframe columns based on data type
...0 1 2.3456 c d 78
[1 rows x 5 columns]
>>> df.dtypes
A int64
B float64
C object
D object
E int64
dtype: object
>>> g = df.columns.to_series().groupby(df.dtypes).groups
>>> g
{dtype('int64'): ['A', 'E'], dtype('float64'): ['B'], dtype('O'): ['C', ...
Check if all elements in a list are identical
...be infinite or just dynamically generated. You can only find its length by converting it to a list which takes away most of the iterators advantages
– Ivo van der Wijk
Oct 5 '10 at 5:51
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How exactly does the callstack work?
...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 understand yet.
...
getExtractedText on inactive InputConnection warning on android
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I ran into a similar issue. My logcat:
W/IInputConnectionWrapper(21214): getTextBeforeCursor on inactive InputConnection
W/IInputConnectionWrapper(21214): getSelectedText on inactive InputConnection
W/IInputConnectionWrapper(21214...