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“ArrayAdapter requires the resource ID to be a TextView” xml problems
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433
The ArrayAdapter requires the resource ID to be a TextView XML exception means you don't suppl...
How to implement if-else statement in XSLT?
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Ian Roberts
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answered Nov 29 '12 at 9:17
px1mppx1mp
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For each row return the column name of the largest value
...ample reproducible):
DF <- data.frame(V1=c(2,8,1),V2=c(7,3,5),V3=c(9,6,4))
colnames(DF)[apply(DF,1,which.max)]
[1] "V3" "V1" "V2"
A faster solution than using apply might be max.col:
colnames(DF)[max.col(DF,ties.method="first")]
#[1] "V3" "V1" "V2"
...where ties.method can be any of "rando...
UIViewController viewDidLoad vs. viewWillAppear: What is the proper division of labor?
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4 Answers
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When should I use GC.SuppressFinalize()?
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edited Jun 7 at 13:46
Eliahu Aaron
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answer...
How to load/edit/run/save text files (.py) into an IPython notebook cell?
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MongoDB/NoSQL: Keeping Document Change History
...ou change its value. A document could look something like this:
{
_id: "4c6b9456f61f000000007ba6"
title: [
{ version: 1, value: "Hello world" },
{ version: 6, value: "Foo" }
],
body: [
{ version: 1, value: "Is this thing on?" },
{ version: 2, value: "What should I write?" },...
What is the correct way of using C++11's range-based for?
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4 Answers
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Does MySQL ignore null values on unique constraints?
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4 Answers
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Why is using the rails default_scope often recommend against?
... = 't'
Well this is pretty much what we expect. Now lets try:
2.1.1 :004 > Post.new
=> #<Post id: nil, title: nil, published: true, created_at: nil, updated_at: nil>
And there we have the first big problem with default scope:
=> default_scope will affect your model initializa...