与string/pattern/replacement长度相同的字符向量。 也可以看看 str_replace_na()将缺失值转换为"NA";stri_replace()用于底层实现。 例子 fruits <- c("one apple","two pears","three bananas")str_replace(fruits,"[aeiou]","-")#> [1] "-ne apple" "tw- pears" "thr-e bananas"str_replace_all(...
library(stringr)library(text2vec)data("movie_review")# select500rowsforfaster running times movie_review=movie_review[1:500,]prep_fun=function(x){x%>%# make text lowercasestr_to_lower%>%# remove non-alphanumeric symbolsstr_replace_all("[^[:alnum:]]"," ")%>%# collapse multiple spaces...
eapply Apply a Function Over Values in an Environment 对环境中的值使用函数 eapply(env, FUN, ..., all.names = FALSE, USE.NAMES = TRUE) mapply Apply a Function to Multiple List or Vector Arguments 对多个列表或者向量参数使用函数 mapply(FUN, ..., MoreArgs = NULL, SIMPLIFY = TRUE, USE....
df("./examples/src/main/resources/people.json", "json") head(people) ## age name ##1 NA Michael ##2 30 Andy ##3 19 Justin # SparkR 自动从 JSON 文件推断出 schema(模式) printSchema(people) # root # |-- age: long (nullable = true) # |-- name: string (nullable = true) #...
or # followed by a character string in any view. All entered content (including ! and #) is displayed as comments. That is, the corresponding configuration is not generated. Some commands can be executed in multiple views, but they have different functions after being executed in different ...
The value is a string of 1 to 64 case-insensitive characters without any spaces. If this parameter is not specified, the script will be installed in $_user. If this parameter is specified, the script will be installed in $_user/directory. If the directory name does not exist, a director...
Selector identifies a field (or attribute, element, …) of the resource representation to filter by. It can be any non empty Unicode string that doesn’t contain reserved characters (see below) or a white space. The specific syntax of the selector is not enforced by this parser. ...
Execute R Script components can return multiple outputs, but they must be provided as R data frames. The designer automatically converts data frames to datasets for compatibility with other components. Standard messages and errors from R are returned to the component's log. If you need to print...
ReferenceError(message:String)— 构造函数, 类 ReferenceError 创建一个新的 ReferenceError 对象。 referenceNameInput— 外观部件, 类 com.adobe.dct.component.datadictionaryElement.DDEMetaEditor A skin part that defines SkinnableTextBase for data dictionary reference name. A skin part that defines Skinnable...
String,System.Object>>.Remove Method (System.ServiceModel.Channels) Multiple-Destination Messaging PROPID_MGMT_QUEUE_EOD_RESEND_INTERVAL MSMQCoordinatedTransactionDispenser.BeginTransaction Visual Basic Code Example: Retrieving MSMQQueueInfo.IsWorldReadable2 Status Bars Reference MSMQQueue.IsOpen IPrivateId...