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cancelling a handler.postdelayed process
...nnable, SPLASH_DISPLAY_LENGTH);
And this to remove it: myHandler.removeCallbacks(myRunnable);
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Pandas aggregate count distinct
... already given, the solution using the string "nunique" seems much faster, tested here on ~21M rows dataframe, then grouped to ~2M
%time _=g.agg({"id": lambda x: x.nunique()})
CPU times: user 3min 3s, sys: 2.94 s, total: 3min 6s
Wall time: 3min 20s
%time _=g.agg({"id": pd.Series.nunique})
CPU tim...
SQLAlchemy IN clause
...w about
session.query(MyUserClass).filter(MyUserClass.id.in_((123,456))).all()
edit: Without the ORM, it would be
session.execute(
select(
[MyUserTable.c.id, MyUserTable.c.name],
MyUserTable.c.id.in_((123, 456))
)
).fetchall()
select() takes two parameters, the first...
ASP.NET MVC View Engine Comparison
...nd Fluid
Easy to Learn
Is not a new language
Has great Intellisense
Unit Testable
Ubiquitous, ships with ASP.NET MVC
Cons:
Creates a slightly different problem from "tag soup" referenced above. Where the server tags actually provide structure around server and non-server code, Razor confuses H...
What does the “@” symbol do in Powershell?
...lizes a hash table with key-value pairs, e.g.
$HashArguments = @{ Path = "test.txt"; Destination = "test2.txt"; WhatIf = $true }
Splatting (see about_splatting)
Let's you invoke a cmdlet with parameters from an array or a hash-table rather than the more customary individually enumerated parameter...
How can I save a screenshot directly to a file in Windows? [closed]
...ormat format = ImageFormat.PNG; or ImageFormat format = ImageFormat.JPG; All is here for you
– Patrick Desjardins
Oct 1 '08 at 15:31
4
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Python: Tuples/dictionaries as keys, select, sort
...es and so on.
I'd like to organize them in a data structure in Python that allows for easy selection and sorting. My idea was to put them into a dictionary with tuples as keys, e.g.,
...
AngularJS ng-style with a conditional expression
... color ],
'font-size': {0: '12px', 1: '18px', 2: '26px'}[ zoom ]
}">Test</p>
If $scope.color == 'blueish', the color will be 'blue'.
If $scope.zoom == 2, the font-size will be 26px.
angular.module('app',[]);
function MyCtrl($scope) {
$scope.color = 'blueish';
$scope.zoom ...
Django datetime issues (default=datetime.now())
... use of a callable for default (django-chinese-docs-14.readthedocs.io/en/latest/ref/models/…)
– Mark
Jan 1 '17 at 14:41
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iPad/iPhone hover problem causes the user to double click a link
...
Haven't tested this fully but since iOS fires touch events, this could work, assuming you are in a jQuery setting.
$('a').on('click touchend', function(e) {
var el = $(this);
var link = el.attr('href');
window.location =...