I dont know how to do it in C++ but to open a new command prompt window that is also minimized (or “hidden”) using a batch file i would use: start /min cmd Or if you start the command prompt you can type: @echo off cls && start /b cmd This restarts the current command … Read more
This is what you’d use the meta Keyword for. def parse(self, response): for sel in response.xpath(‘//tbody/tr’): item = HeroItem() # Item assignment here url=”https://” + item[‘server’] + ‘.battle.net/’ + sel.xpath(‘td[@class=”cell-BattleTag”]//a/@href’).extract()[0].strip() yield Request(url, callback=self.parse_profile, meta={‘hero_item’: item}) def parse_profile(self, response): item = response.meta.get(‘hero_item’) item[‘weapon’] = response.xpath(‘//li[@class=”slot-mainHand”]/a[@class=”slot-link”]/@href’).extract()[0].split(“https://stackoverflow.com/”)[4] yield item Also note, doing sel = Selector(response) is a waste … Read more
You are passing this.onUserInput as a property to FirstNestedComponent. Therefore, you should access it in FirstNestedComponent as this.props.onUserInput. var FirstNestedComponent = React.createClass({ render: function() { return ( <div> <SecondNestedComponent onUserInput={this.props.onUserInput} /> </div> ); } });
Ok, I’m still trying to figure this out too, but here’s whats working for me so far: #this is the variable that will hold a reference to the python function PyObject *py_callback; #the following function will invoked from python to populate the call back reference PyObject *set_py_callback(PyObject *callable) { py_callback = callable; /* Remember new … Read more
In his ‘Programming WCF Services’ book, Juval Lowy explains that WCF does not provide a mechansim for managing service callbacks, and this must be managed by the service and client explicitly. If the service attempts to invoke a callback which has been closed on the client, an ObjectDisposedException will be thrown on the service channel. … Read more
jQuery’s .each() takes a callback function and applies it to each element in the jQuery object. Imagine something like this: $(‘a.ui-icon-cart’).click(function(){ $(this).closest(‘li’).clone().appendTo(‘#cart ul’).each(function() { $(this).find(‘h5’).remove(); $(this).find(‘img’).css({‘height’:’40px’, ‘width’:’40px’}); $(this).find(‘li’).css({‘height’:’60px’, ‘width’:’40px’}); }); }); You could also just store the result and work on it instead: $(‘a.ui-icon-cart’).click(function(){ var $new = $(this).closest(‘li’).clone().appendTo(‘#cart ul’) $new.find(‘h5’).remove(); $new.find(‘img’).css({‘height’:’40px’, ‘width’:’40px’}); $new.find(‘li’).css({‘height’:’60px’, ‘width’:’40px’}); }); … Read more
Updated for comments: If you’re opening your window via window.open() then in your child page you can set a function in the child to just be a reference pointing to a parent function, so have this in the child page: var RunCallbackFunction = function() { }; //reference holder only Then in your parent (opener), set … Read more
You could use a javascript closure: for (var i = 0; i < arr.length; i++) { (function(i) { // do your stuff here })(i); } Or you could just use $.each: var arr = [2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010]; $.each(arr, function(index, value) { $.ajaxSetup({ cache:false }); $.getJSON(“NatGeo.jsp”, { ZipCode: value, … Read more
If the callback is defined in the same scope the loop is defined in (which is frequently the case), then the callback will have access to the index variable. Leaving aside NodeJS particulars for a moment, let’s consider this function: function doSomething(callback) { callback(); } That function accepts a callback function reference and all it … Read more