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SQL Server - When to use Clustered vs non-Clustered Index?
...treme care when picking a clustering key - it should be:
narrow (4 bytes ideal)
unique (it's the "row pointer" after all. If you don't make it unique SQL Server will do it for you in the background, costing you a couple of bytes for each entry times the number of rows and the number of nonclustere...
Ruby on Rails patterns - decorator vs presenter
...e functionality to this entity". A presenter is more of a "let's build a bridge between the model/backend and view". The presenter pattern has several interpretations.
Decorators are generic/general purpose. Presenters have a narrower range of responsibilities/uses. Decorators are used across domai...
Loop through Map in Groovy?
...ith a closure:
def map = [
'iPhone':'iWebOS',
'Android':'2.3.3',
'Nokia':'Symbian',
'Windows':'WM8'
]
map.each{ k, v -> println "${k}:${v}" }
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Add hover text without javascript like we hover on a user's reputation
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@David d C e Freitas: thank you for brightening StackOverflow with your edit to this answer ... don't know how to actually tag you but oh well
– Meredith
Jan 7 '19 at 9:44
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python numpy machine epsilon
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just to be 100% confident, the first one provides python "standard" precision of innate floats while the second one the precision of numpy's floats?
– Charlie Parker
Nov 1 '17 at 16:47
...
handlerbars.js check if list is empty
... you want a tag to wrap #each, like an <ul> tag (with <li>s inside), you don't want the empty state to be wrapped by the <ul>.
– Leonardo Raele
Jul 15 '19 at 20:41
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AngularJS - difference between pristine/dirty and touched/untouched
AngularJS Developer Guide - Forms tell there are many styles and directives regarding forms and fields. For each one, a CSS class:
...
Convert SVG to PNG in Python
... a Python binding for librsvg.
There is an Ubuntu python-rsvg package providing it. Searching Google for its name is poor because its source code seems to be contained inside the "gnome-python-desktop" Gnome project GIT repository.
I made a minimalist "hello world" that renders SVG to a cairo
surf...
Rebase feature branch onto another feature branch
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didn't he want to have all changes in Branch1?
– tomasz_kusmierczyk
Mar 23 '18 at 13:45
7
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Right way to reverse pandas.DataFrame?
...if you want to have a for loop which goes from down to up you may do:
for idx in reversed(data.index):
print(idx, data.loc[idx, 'Even'], data.loc[idx, 'Odd'])
or
for idx in reversed(data.index):
print(idx, data.Even[idx], data.Odd[idx])
You are getting an error because reversed first c...