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Pandas: Looking up the list of sheets in an excel file
...e the ExcelFile class (and the sheet_names attribute):
xl = pd.ExcelFile('foo.xls')
xl.sheet_names # see all sheet names
xl.parse(sheet_name) # read a specific sheet to DataFrame
see docs for parse for more options...
...
Displaying the build date
...ystem" #>
<#@ output extension=".g.cs" #>
using System;
namespace Foo.Bar
{
public static partial class Constants
{
public static DateTime CompilationTimestampUtc { get { return new DateTime(<# Write(DateTime.UtcNow.Ticks.ToString()); #>L, DateTimeKind.Utc); } }
}
...
How to check if an object is a list or tuple (but not string)?
...inside another list; but for strings we would rather have them printed as "foo" than as <'f', 'o', 'o'>. So an explicit check for a string makes good sense here. Also, there really aren't any other examples of data types where iterating always returns an iterable and recursion will always ca...
Passing multiple error classes to ruby's rescue clause in a DRY fashion
...
You can use an array with the splat operator *.
EXCEPTIONS = [FooException, BarException]
begin
a = rand
if a > 0.5
raise FooException
else
raise BarException
end
rescue *EXCEPTIONS
puts "rescued!"
end
If you are going to use a constant for the array as above (wi...
Java Synchronized Block for .class
... of its body, then we synchronized(this) is not good, instead synchronized(Foo.class) is appropriate. Is that right?
– krupal.agile
May 15 '19 at 13:37
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...
Are there any SHA-256 javascript implementations that are generally considered trustworthy?
...de-forge, but now, how to use the library do create a hash from the string foo?
– user
Sep 17 '19 at 17:48
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...
How to vertically align an image inside a div
.../edit?html,css,output
HTML:
<div class="frame">
<img src="foo"/>
</div>
CSS:
.frame {
height: 160px; /* Can be anything */
width: 160px; /* Can be anything */
position: relative;
}
img {
max-height: 100%;
max-width: 100%;
width: auto;
height: ...
Rails 3 check if attribute changed
...n the model and check for changed? before you save it. ie. @model.field = 'foo' or @model.attributes = @model.attributes.merge(params[:model])
– Grzegorz
Nov 23 '17 at 6:44
ad...
Go build: “Cannot find package” (even though GOPATH is set)
...
It does not work because your foobar.go source file is not in a directory called foobar. go build and go install try to match directories, not source files.
Set $GOPATH to a valid directory, e.g. export GOPATH="$HOME/go"
Move foobar.go to $GOPATH/src/fo...
module.exports vs exports in Node.js
...the same since you are not reassigning it. That is why this works
exports.foo = function() { ... }
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