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Opposite of %in%: exclude rows with values specified in a vector
... use
`%not in%` <- function (x, table) is.na(match(x, table, nomatch=NA_integer_))
Another way is:
function (x, table) match(x, table, nomatch = 0L) == 0L
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Sequence contains no elements?
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In hind sight, I'm really not sure >_< Silly problem really.
– Andy Hunt
Aug 24 '09 at 20:03
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Remove ALL styling/formatting from hyperlinks
...t inline this way... <a href="#" style="text-decoration: none" target="_blank"><span style="font-family: Arial;font-size: 13px;color: #e91974;font-weight: lighter;">unique</span> <span style="font-family: Arial;font-size: 13px;color: #020202;font-weight: lighter;">sales<...
离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
web服务启动报错：
Picked up JAVA_TOOL_OPTIONS: "-Dfile.encoding=UTF-8"
Executing [D:\appinventor\AppInventor2\resources\app.asar.unpacked\OpenJDK\bin\java, --add-opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.ne...
How to change MenuItem icon in ActionBar programmatically
...thod
menu.getItem(0).setIcon(ContextCompat.getDrawable(this, R.drawable.ic_launcher));
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Is there a macro recorder for Eclipse? [closed]
...nd it works great. In order to make it work, then the file PracticallyMacro_0.4.9.jar needs to be put in the eclipse/downloads/plugins directory (create the plugins directory if it doesn't exist). You can edit macros by going to Windows/Preferences/Practically Macro Options and you can run the macro...
Extracting numbers from vectors of strings
...meric(gsub("([0-9]+).*$", "\\1", years))
or
# pattern is to just remove _years_old
as.numeric(gsub(" years old", "", years))
or
# split by space, get the element in first index
as.numeric(sapply(strsplit(years, " "), "[[", 1))
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Set initial focus in an Android application
... android:focusableInTouchMode="true"
android:layout_width="0px"
android:layout_height="0px" >
<requestFocus />
</LinearLayout>
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WebSockets protocol vs HTTP
...xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.68 Safari/537.17
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: [[[2428 byte of cookie da...
How to index characters in a Golang string?
...)) and may reconvert the string on each iteration for, O(n²). Just do for _, r := range word { fmt.Printf("%c", r) }. If you really wanted to loop with an index for x := 0; x < limit; x++. Please learn the basics of a language before answering questions.
– Dave C
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