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How to pass a user defined argument in scrapy spider
... def parse(self, response)
self.log(self.domain) # system
Taken from the Scrapy doc: http://doc.scrapy.org/en/latest/topics/spiders.html#spider-arguments
Update 2013: Add second argument
Update 2015: Adjust wording
Update 2016: Use newer base class and add super, thanks @Birla
Update ...
PHP + curl, HTTP POST sample code?
...le
curl.cainfo=c:\php\cacert.pem
The latest cacert.pem can be downloaded from the Internet or extracted from your favorite browser. When changing any php.ini related settings remember to restart your webserver.
share
...
Set “this” variable easily?
...otype object so every function can use them (since every function inherits from this prototype via prototypal inheritance). These functions are the following:
Function.prototype.call(): This function takes the object which you want to use as this as a first argument. Then the remainder of the argu...
REST response code for invalid data
...d it should be treated by browsers the same as any other 4xx status code.
From RFC 4918:
The 422 (Unprocessable Entity) status code means the server understands the content type of the request entity (hence a 415(Unsupported Media Type) status code is inappropriate), and the syntax of the reque...
what is the preferred way to mutate a React state?
...
Calling this.setState with a value derived from this.state will have you fall foul of update batching issues. See stackoverflow.com/a/41445812/1998186 which links to a jsfiddle showing the problem you'll get.
– NealeU
Jan 3 '17 ...
Difference between knockout View Models declared as object literals vs functions
...d observable can be bound to the appropriate value of this, even if called from a different scope.
With an object literal, you would have to do:
var viewModel = {
first: ko.observable("Bob"),
last: ko.observable("Smith"),
};
viewModel.full = ko.computed(function() {
return this.first() +...
Calculating sum of repeated elements in AngularJS ng-repeat
...mal list. The first thing to create a new filter for the sum of all values from the list, and also given solution for a sum of the total quantity.
In details code check it fiddler link.
angular.module("sampleApp", [])
.filter('sumOfValue', function () {
return function (data, key) {...
What's a redirect URI? how does it apply to iOS app for OAuth2.0?
...app.
The other key point to this puzzle is that you could launch your app from a URL given to a webview. To do this, i simply followed the guide on here:
http://iosdevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html
and
http://inchoo.net/mobile-development/iphone...
Can you list the keyword arguments a function receives?
...t required, so ignore them.
Then a function to tell what you are missing from your particular dict is:
def missingArgs(func, argdict):
return set(getRequiredArgs(func)).difference(argdict)
Similarly, to check for invalid args, use:
def invalidArgs(func, argdict):
args, varargs, varkw, ...
async await return Task
...
async methods are different than normal methods. Whatever you return from async methods are wrapped in a Task.
If you return no value(void) it will be wrapped in Task, If you return int it will be wrapped in Task<int> and so on.
If your async method needs to return int you'd mark the ...