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How can you automatically remove trailing whitespace in vim
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Compilation of above plus saving cursor position:
fun! <SID>StripTrailingWhitespaces()
let l = line(".")
let c = col(".")
keepp %s/\s\+$//e
call cursor(l, c)
endfun
autocmd FileType c,cpp,java,php,ruby,python autocmd BufWritePre <buffer> :call &l...
Last iteration of enhanced for loop in java
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Although the code is more slick/neat/fun, it is less obvious than the if version. Always use the more obvious/readable version.
– Bill K
Nov 13 '08 at 19:07
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Python __str__ and lists
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Two easy things you can do, use the map function or use a comprehension.
But that gets you a list of strings, not a string. So you also have to join the strings together.
s= ",".join( map( str, myList ) )
or
s= ",".join( [ str(element) for element in myList ]...
Change text color of one word in a TextView
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I implemented a utility function in Kotlin for my own usecase and maybe useful for someone else.
fun getCusomTextWithSpecificTextWithDiffColor(textToBold: String, fullText: String,
targetColor: Int)...
App Inventor 2 向心力实验App - 探究向心力F与角速度ω、半径r、质量m的关...
...文档
文档版本：2026.05 | 作者：App Inventor 2 中文网 www.fun123.cn
原文来源：MIT App Inventor 官方文档 | MIT App Inventor GitHub
MIT App Inventor 官方文档采用 CC BY-SA 4.0 授权。本文档由 ai2claw 整理，仅供学习参考。
What is the best comment in source code you have ever encountered? [closed]
... The first time I've ever been truly RickRolled - and it was funny. When I see links to YouTube I always expect to be RickRolled (camel cased English!!), but I never never never expected to be RickRolled in code comments.
– Vincent McNabb
Jul 28 '...
How do I dump an object's fields to the console?
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Using introspection is part of the fun of Ruby. It's often useful to subtract an Object's instance_methods from the class' in question to get the methods that are unique: (String.instance_methods - Object.instance_methods).sort
– the Tin ...
Numbering rows within groups in a data frame
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Use ave, ddply, dplyr or data.table:
df$num <- ave(df$val, df$cat, FUN = seq_along)
or:
library(plyr)
ddply(df, .(cat), mutate, id = seq_along(val))
or:
library(dplyr)
df %>% group_by(cat) %>% mutate(id = row_number())
or (the most memory efficient, as it assigns by reference w...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...swer or the later answer with arithmetic encoding. Below you may find some fun, but not a 100% bullet-proof solution.
This is quite an interesting task and here is an another solution. I hope somebody would find the result useful (or at least interesting).
Stage 1: Initial data structure, rough co...
Place cursor at the end of text in EditText
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There is a function called append for ediitext which appends the string value to current edittext value and places the cursor at the end of the value.
You can have the string value as the current ediitext value itself and call append();...