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Expert R users, what's in your .Rprofile? [closed]
...tryCatch(
{options(
width = as.integer(Sys.getenv("COLUMNS")))},
error = function(err) {
write("Can't get your terminal width. Put ``export COLUMNS'' in your \
.bashrc. Or something. Setting width to 120 chars",
stderr());
options(width=120)}
)
This way R wi...
思维导图在快速阅读或是其它学习工作中的作用 - 创意 - 清泛网 - 专注C/C++...
...么，这使我们可以积极地倾听讲课者。关键知识点之间的连接线会引导您进行积极主动思考。快速系统的整合知识，可以为您的知识融会贯通创造了极其有利的条件。发展创造性思维和创新能力。发散思维是创新思维的核心。画...
How to retrieve GET parameters from javascript? [duplicate]
...
Thank you for noticing my error. I also took the liberty of modifying your code, removing the second split invocation, which can be replaced with a local variable.
– Bakudan
Jul 2 '14 at 15:49
...
Difference between single and double square brackets in Bash
... && b = b ]]: true, logical and
[ a = a && b = b ]: syntax error, && parsed as an AND command separator cmd1 && cmd2
[ a = a -a b = b ]: equivalent, but deprecated by POSIX³
[ a = a ] && [ b = b ]: POSIX and reliable equivalent
(
[[ (a = a || a = b) &...
How do I run two commands in one line in Windows CMD?
...mmand only if the first command did not complete successfully (receives an error code greater than zero).
( ) [...]
(command1 & command2)
Use to group or nest multiple commands.
; or ,
command1 parameter1;parameter2
Use to separate command parameters.
...
How to check if one of the following items is in a list?
...e substituted the numbers in L2 for strings, and i'm getting the following error: TypeError: 'in <string>' requires string as left operand, not list
– roastbeeef
Jan 16 '19 at 12:21
...
Quickly create a large file on a Linux system
...d" so it could take a very very very long time
– Xen2050
Jan 9 '17 at 7:41
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Is there a built-in function to print all the current properties and values of an object?
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edited Oct 10 '08 at 20:05
S.Lott
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answere...
Read/Write String from/to a File in Android
... to.)
– SharkAlley
Aug 11 '15 at 20:05
1
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云数据及Firebase组件简介 · App Inventor 2 中文网
...个设备上独立（本地）存储数据是不够的。
为了在任何连接的设备上存储应用程序所有用户的全局高分，应用程序的发明者应该将其存储在网上。 它应该被存储，以便游戏应用程序的每个副本都可以读取和写入有关高分的数据...