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Why is rbindlist “better” than rbind?
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By v1.9.2, rbindlist had evolved quite a bit, implementing many features including:
Choosing the highest SEXPTYPE of columns while binding - implemented in v1.9.2 closing FR #2456 and Bug #4981.
Handling factor columns ...
angular ng-repeat in reverse
...fter a year, but there is an new, easier solution, which works for Angular v1.3.0-rc.5 and later.
It is mentioned in the docs:
"If no property is provided, (e.g. '+') then the array element itself is used to compare where sorting". So, the solution will be:
ng-repeat="friend in friends | orderBy...
'App not Installed' Error on Android
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Before I only had V2 (Full APK Signature) selected, but after selecting V1 Jar Signature as well, I was able to successfully install my signed APK on my 4.4.2 device. Hope this helps others!
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Alternative to google finance api [closed]
...mple, to get all stock quotes in XML:
http://finance.yahoo.com/webservice/v1/symbols/allcurrencies/quote
To get all stock quotes in JSON, just add format=JSON to the end of the URL:
http://finance.yahoo.com/webservice/v1/symbols/allcurrencies/quote?format=json
Alternatives:
1. Currency API
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Git flow release branches and tags - with or without “v” prefix
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@schmijos @LeoTM - The document only states that v1.2.3 is not a semantic version. The question was about Git tags. In fact, the semver repo still uses v2.0.0 as a tag for version 2: github.com/mojombo/semver/releases/tag/v2.0.0
– friederbluemle
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How to delete a row by reference in data.table?
...something like this:
DT = data.table(col1 = 1:1e6)
cols = paste0('col', 2:100)
for (col in cols){ DT[, (col) := 1:1e6] }
keep.idxs = sample(1e6, 9e5, FALSE) # keep 90% of entries
DT.subset = data.table(col1 = DT[['col1']][keep.idxs]) # this is the subsetted table
for (col in cols){
DT.subset[, (c...
Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...正确。对于后者，通常是你需要告诉编译器头文件的所在位置（头文件中应该只是声明，而定义应该放在C/C++文件中），只要所有的语法正确，编译器就可以编译出中间目标文件。一般来说，每个源文件都应该对应于一个中间目...
Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...正确。对于后者，通常是你需要告诉编译器头文件的所在位置（头文件中应该只是声明，而定义应该放在C/C++文件中），只要所有的语法正确，编译器就可以编译出中间目标文件。一般来说，每个源文件都应该对应于一个中间目...
Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...正确。对于后者，通常是你需要告诉编译器头文件的所在位置（头文件中应该只是声明，而定义应该放在C/C++文件中），只要所有的语法正确，编译器就可以编译出中间目标文件。一般来说，每个源文件都应该对应于一个中间目...
Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...正确。对于后者，通常是你需要告诉编译器头文件的所在位置（头文件中应该只是声明，而定义应该放在C/C++文件中），只要所有的语法正确，编译器就可以编译出中间目标文件。一般来说，每个源文件都应该对应于一个中间目...