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How can I make pandas dataframe column headers all lowercase?
...@PawelKranzberg Do you have any idea how to lower the column names of MultiIndex
– curious_nustian
May 2 at 19:44
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How to impose maxlength on textArea in HTML using JavaScript
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@JoshStodola - Indeed you cannot. It would really annoy me as a user if I had pasted a whole piece of something in a textarea, clicked submit, and only saw a small portion of it go through without any response.
– Travis J
Apr 30 '1...
nginx: send all requests to a single html page
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This worked for me:
location / {
alias /path/to/my/indexfile/;
try_files $uri /index.html;
}
This allowed me to create a catch-all URL for a javascript single-page app. All static files like css, fonts, and javascript built by npm run build will be found if they are i...
Remove files from Git commit
...t will take the file as it was in the previous commit, and stage it in the index. The file in the working directory is untouched.
The git commit will then commit and squash the index into the current commit.
This essentially takes the version of the file that was in the previous commit and adds it ...
浅谈HTML5 & CSS3的新交互特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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2. 更好的表格体系
现在，你可以抛弃JavaScript或者是PHP，只通过HTML5来定义表格。你可以定义每个表格单元的输入格式，也可以定义这个单元是否是必填的等等。
3. 音频、视频API
HTML5不但允许你在网页中直接整合视频、...
Differences between Agda and Idris
...the easiest example is associativity of vector concatenation. Given length-indexed lists called vectors defined thusly:
data Vect : Nat -> Type -> Type where
Nil : Vect 0 a
(::) : a -> Vect n a -> Vect (S n) a
and concatenation with the following type:
(++) : Vect n a -> Vect...
Switch on Enum in Java [duplicate]
... about. Also, I've seen code that puts enum constants into arrays and then indexes into the arrays - this opens the possibility of array index out of bounds exceptions - just use the enum! Java enums are very, very powerful. Learn all that you can about them to use them effectively.
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Return multiple columns from pandas apply()
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If the pd.Series needs an index, you need to supply it with pd.Series(data, index=...). Otherwise you get cryptic errors when you try to assign the result back into the parent dataframe.
– smci
Nov 25 '19 at 11:0...
MySQL Like multiple values
...GEXP 'sports|pub'
Found this solution here: http://forums.mysql.com/read.php?10,392332,392950#msg-392950
More about REGEXP here: http://www.tutorialspoint.com/mysql/mysql-regexps.htm
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impr...
Joins are for lazy people?
...g done via the client, because it avoids DB roundtrips, and the DB can use indexes to perform the join.
Off the top of my head, I can't even imagine a single scenario where a correctly used join would be slower than the equivalent client-side operation.
Edit: There are some rare cases where custom...