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AI2Utils 拓展：一些常用的小功能集合 · App Inventor 2 中文网
...uzzyMatch)
通过姓名查找通讯录，返回 (联系人,手机号) 的列表。fuzzyMatch：是否模糊匹配
FindContactsByNumber(number,fuzzyMatch)
通过手机号查找通讯录，返回 (联系人,手机号) 的列表。fuzzyMatch：是否模糊匹配
GoHome()
返回手机桌面...
iOS开发如何提高 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。
我自己精心整理了国内40多位iOS开发博主的博客地址列表：https://github.com/tangqiaoboy/iOSBlogCN，希望大家都能培养起阅读博客的习惯。
国外也有很多优秀的iOS开发博客，他们整体质量比中文的博客更高，以下是一些推荐的博客...
Log all queries in mysql
...ediumtext NOT NULL,
`thread_id` bigint(21) unsigned NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
CREATE TABLE `general_log` (
`event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext NOT NU...
Reading an Excel file in PHP [closed]
...l file. If you want to import it into mysql, you could simply save it as a CSV formatted file and then use fgetcsv to parse it.
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数据结构与本地数据库：从知识到实战，八课附 .aia · App Inventor 2 中文网
...学习
如何学会，而不只是导入
毕业任务
用 八课 把列表、字典、稳定 ID、JSON、SQLite、事务、导出连成一个能操作的 知识卡片与错题库。每课先预测和追踪，再修改项目；最后完成自己的改造。预计 6–8 小时，具体时间随...
For each row in an R dataframe
...nction is vectorized, then you can skip the loop and just use cat or write.csv:
write.csv(data.frame(wellid=getWellID(well$name, well$plate),
value1=well$value1, value2=well$value2), file=outputFile)
If getWellID() isn't vectorized, then Jonathan's recommendation of using by or knguyen'...
Importing data from a JSON file into R
...y(httr)
library(jsonlite)
I have had issues converting json to dataframe/csv. For my case I did:
Token <- "245432532532"
source <- "http://......."
header_type <- "applcation/json"
full_token <- paste0("Bearer ", Token)
response <- GET(n_source, add_headers(Authorization = full_tok...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)
...tring.
So just replace .encode with .decode, and it should work (if your .csv is UTF-8-encoded).
Nothing to be ashamed of, though. I bet 3 in 5 programmers had trouble at first understanding this, if not more ;)
Update:
If your input data is not UTF-8 encoded, then you have to .decode() with the ...
Getting LaTeX into R Plots
...re(graphics)
require(tikzDevice)
setwd("~/DataFolder/")
Lab5p9 <- read.csv (file="~/DataFolder/Lab5part9.csv", comment.char="#")
AR <- subset(Lab5p9,Region == "Forward.Active")
# make sure the data names aren't already in latex format, it interferes with the ggplot ~ # tikzDecice combo
col...
App Inventor 2 数学积木完全指南：从加减乘除到位运算，一篇搞定所有计算...
...3 = 8，省去重复写乘法。
小技巧：带有数字值的块（如列表长度、文本长度、变量值）都可以直接接入数学运算积木，不需要先转换为数字类型。
二、比较运算：条件判断的核心
六种比较积木返回 真(true) 或 假(false)，是...