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How to make good reproducible pandas examples
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But say what's incorrect: the A column is in the index rather than a column.
do show you've done some research (search the docs, search StackOverflow), give a summary:
The docstring for sum simply states "Compute sum of group values"
The groupby docs don't give any...
How to parse/format dates with LocalDateTime? (Java 8)
... Don't forget the uppercase on MM
– Wesos de Queso
Jun 25 '17 at 3:50
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show 1 more comment
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Open new Terminal Tab from command line (Mac OS X)
...te that if the path is coming from a variable, you'll need to use a double-quoted string instead of single-quoted, and escape the inner quoted string, and probably the path itself.
– Gordon Davisson
Dec 23 '18 at 6:02
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Serving static files with Sinatra
...ill serve assets in public. For the empty route, you'll want to render the index document.
require 'rubygems'
require 'sinatra'
get '/' do
File.read(File.join('public', 'index.html'))
end
Routes should return a String which become the HTTP response body. File.read opens a file, reads the file,...
Replace a character at a specific index in a string?
I'm trying to replace a character at a specific index in a string.
8 Answers
8
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Checkout another branch when there are uncommitted changes on the current branch
...ded, removed, or altered in the work-tree as part of this process, and the index/staging-area is also untouched. (Caveat: it's safe when creating a new branch without changing the new branch's starting-point; but if you add another argument, e.g., git checkout -b newbranch different-start-point, th...
URL rewriting with PHP
...ng in your .htaccess instead: (note the leading slash)
FallbackResource /index.php
This will tell it to run your index.php for all files it cannot normally find in your site. In there you can then for example:
$path = ltrim($_SERVER['REQUEST_URI'], '/'); // Trim leading slash(es)
$elements =...
What makes a SQL statement sargable?
...CT ... FROM ...
WHERE Year(myDate) = 2008
The SQL optimizer can't use an index on myDate, even if one exists. It will literally have to evaluate this function for every row of the table. Much better to use:
WHERE myDate >= '01-01-2008' AND myDate < '01-01-2009'
Some other examples:
Bad: ...
What is the best way to conditionally apply a class?
... an li for each element and a property on the controller called selectedIndex . What would be the best way to add a class to the li with the index selectedIndex in AngularJS?
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