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Get type of all variables
...character
typeof(3 + 四) #R pukes on unicode error
typeof(iconv("a", "latin1", "UTF-8")) #UTF-8 characters character
typeof(5 == 5) #result of a comparison: logical
How to get the class of a variable you have in R
The R function class ...
Clear a terminal screen for real
...nswer
– daniels_pa
Aug 13 '18 at 15:05
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string sanitizer for filename
...er in an unsafe HTML context because this absolutely legal filename:
' onerror= 'alert(document.cookie).jpg
becomes an XSS hole:
<img src='<? echo $image ?>' />
// output:
<img src=' ' onerror= 'alert(document.cookie)' />
Because of that, the popular CMS software Wordpress r...
What is the syntax to insert one list into another list in python?
... can!
– user3707850
Feb 8 '18 at 19:05
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Number of processors/cores in command line
...
The most simplest tool comes with glibc and is called getconf:
$ getconf _NPROCESSORS_ONLN
4
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从网购到火车票，对比淘宝12306网为何如此烂？ - 大数据 & AI - 清泛网 - ...
...7)。如果无票了，则总线返回界面集群“没票了”，界面提示用户明天再试。
7)若有余票，则总线返回界面集群“正在出票，请等待”，并将订票请求压入队列。且发消息至Cache，告诉CACHE将订票请求加入队列。
8)Cache收到总线...
What does cherry-picking a commit with Git mean?
... from a maintenance
branch to a development branch.
$ git checkout rel_2.3
$ git cherry-pick dev~2 # commit F, above
before:
after:
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Abusing the algebra of algebraic data types - why does this work?
...rom?
– Chris Taylor
Feb 8 '12 at 13:05
1
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From io.Reader to string in Go
.... Example:
buf := new(strings.Builder)
n, err := io.Copy(buf, r)
// check errors
fmt.Println(buf.String())
OUTDATED INFORMATION BELOW
The short answer is that it it will not be efficient because converting to a string requires doing a complete copy of the byte array. Here is the proper (non-ef...
Getting LaTeX into R Plots
...t interferes with the ggplot ~ # tikzDecice combo
colnames(AR) <- c("$V_{BB}[V]$", "$V_{RB}[V]$" , "$V_{RC}[V]$" , "$I_B[\\mu A]$" , "IC" , "$V_{BE}[V]$" , "$V_{CE}[V]$" , "beta" , "$I_E[mA]$")
# make sure the working directory is where you want your tikz file to go
setwd("~/TexImageFolder/")
...