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How does one reorder columns in a data frame?
...e above question do df2[,c(1,3,2,4)]
If you want to output this file as a csv, do write.csv(df2, file="somedf.csv")
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Programmatically access currency exchange rates [closed]
...le, to convert from GBP to EUR:
http://download.finance.yahoo.com/d/quotes.csv?s=GBPEUR=X&f=sl1d1t1ba&e=.csv
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Client on node: Uncaught ReferenceError: require is not defined
...d Aug 21 '18 at 2:04
Christian Læirbag
21044 silver badges1616 bronze badges
answered Aug 3 '18 at 10:42
ydan...
How to use clock() in C++
... answered Mar 17 '16 at 12:32
Färid AlijaniFärid Alijani
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Best way to alphanumeric check in JavaScript
...doesn't imply that there are no exceptions.
– Risto Välimäki
Jun 8 '15 at 6:38
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What's the equivalent of use-commit-times for git?
...ay I offer 2 approaches?
1 - http://repo.or.cz/w/metastore.git , by David Härdeman. Tries to do what git should have done in the first place: stores metadata (not only timestamps) in the repo when commiting (via pre-commit hook), and re-applies them when pulling (also via hooks).
2 - My humble vers...
C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...list 它用尖括号<> 一个小于号和一个大于号括起来.
该列表是模板参数表不能为空,模板参数可以是一个模板类型参数template type
parameter 它代表了一种类型,也可以是一个模板非类型参数template nontype parameter
它代表了一个...
Best way to do multi-row insert in Oracle?
...0) primary key, description varchar2(20));
Table created.
SQL>
Create CSV
oracle-2% cat ldr_test.csv
1,Apple
2,Orange
3,Pear
oracle-2%
Create Loader Control File
oracle-2% cat ldr_test.ctl
load data
infile 'ldr_test.csv'
into table ldr_test
fields terminated by "," optionally enclosed...
Limit File Search Scope in Sublime Text 2
...wered Dec 4 '12 at 16:11
David PärssonDavid Pärsson
5,24322 gold badges3131 silver badges4646 bronze badges
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C++ template中typename和class的区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ndent type names（嵌套依赖类型名），在 base class lists（基类列表）中或在一个 member initialization list（成员初始化列表）中作为一个 base class identifier（基类标识符）时除外。
For example:
using namespace std;
template <class T> int vcount(vec...