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How to sort a collection by date in MongoDB?

... @SamBrightman That function is just a callback. Whatever you want to do with the query result, you put that logic inside your callback. You can read more on what callbacks are and how they work to learn event based programming. – Sushant Gupt...
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Why does Hibernate require no argument constructor?

...r class contains a lot of constructors public class Person { private String name; private Integer age; public Person(String name, Integer age) { ... } public Person(String name) { ... } public Person(Integer age) { ... } } As you can see, you deal with a issue of inconsiste...
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Responding with a JSON object in Node.js (converting object/array to JSON string)

...nd code and I'm trying to create a function that will respond to me a JSON string. I currently have this from an example 6 ...
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Java Pass Method as Parameter

...void execute(Object data) { System.out.println(data.toString()); } } public static void callCommand(Command command, Object data) { command.execute(data); } public static void main(String... args) { callCommand(new PrintCom...
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C# “as” cast vs classic cast [duplicate]

...eter, then you have two choices: First, using a normal cast: if(myObj is string) { string value = (string)myObj; ... do something } else if(myObj is MyClass) { MyClass = (MyClass)myObj; } This requires that you check the type of the object using is so that you don't try to cast it t...
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Replace None with NaN in pandas dataframe

...fillna or Series.fillna which will replace the Python object None, not the string 'None'. import pandas as pd import numpy as np For dataframe: df = df.fillna(value=np.nan) For column or series: df.mycol.fillna(value=np.nan, inplace=True) ...
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CSS3 transition events

...ent. An event is fired for each property that undergoes a transition. This allows a content developer to perform actions that synchronize with the completion of a transition. Webkit To determine when a transition completes, set a JavaScript event listener function for the DOM event that is s...
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How do I Geocode 20 addresses without receiving an OVER_QUERY_LIMIT response?

...calculations. -- Returns various prototypes to fetch position from strings or coords or dragons or whatever. */ var Geolocalizer = function () { this.queue = []; // queue handler.. this.resolved = []; this.geolocalizer = new google.maps.Geocoder(); }; Geolo...
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Configure Microsoft.AspNet.Identity to allow email address as username

I'm in the process of creating a new application and started out using EF6-rc1, Microsoft.AspNet.Identity.Core 1.0.0-rc1, Microsoft.AspNet.Identity.EntityFramework 1.0.0-rc1, Microsoft.AspNet.Identity.Owin 1.0.0-rc1, etc and with the RTM releases yesterday, I updated them via NuGet this evening to R...
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Difference between author and committer in Git?

... is the person who originally wrote the code. The committer, on the other hand, is assumed to be the person who committed the code on behalf of the original author. This is important in Git because Git allows you to rewrite history, or apply patches on behalf of another person. The FREE online Pro G...