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What is TypeScript and why would I use it in place of JavaScript? [closed]
...implementations by many different vendors (e.g. Google, Microsoft, Oracle, etc.). The goal of JavaScript is to be the lingua franca of the web.
TypeScript is a superset of the JavaScript language that has a single open-source compiler and is developed mainly by a single vendor: Microsoft. The goal o...
When should I use cross apply over inner join?
...ch as employment), like Age, AgeGroup, AgeAtHiring, MinimumRetirementDate, etc. for use in your end-user application (Excel PivotTables, for example).
Options are limited and rarely elegant:
JOIN subqueries cannot introduce new values in the dataset based on data in the parent query (it must stan...
Add a prefix to all Flask routes
...un this application inside of a WSGI container (mod_wsgi, uwsgi, gunicorn, etc); you need to actually mount, at that prefix the application as a sub-part of that WSGI container (anything that speaks WSGI will do) and to set your APPLICATION_ROOT config value to your prefix:
app.config["APPLICATION_...
Working with select using AngularJS's ng-options
...rra" }
, { key:"AI",value:"Anguilla" }
, { key:"AO",value:"Angola" }
...etc..
]
Now
<select ng-model="countries" ng-options="item.key as item.value for item in items"></select>
still resulted in the options value to be the index (0, 1, 2, etc.).
Adding Track By fixed it for me:
...
How do I log ALL exceptions globally for a C# MVC4 WebAPI app?
...
Why rethrow etc? This works and it will make the service return status 500 etc
public class LogExceptionFilter : ExceptionFilterAttribute
{
private static readonly ILog log = LogManager.GetLogger(typeof (LogExceptionFilter));
p...
Count, size, length…too many choices in Ruby?
...block_given_p())
return LONG2NUM(RARRAY_LEN(ary));
// etc..
}
}
The code for array.count does a few extra checks but in the end calls the exact same code: LONG2NUM(RARRAY_LEN(ary)).
Hashes (source code) on the other hand don't seem to implement their own optimized version...
Android AsyncTask threads limits?
... the phone. For all those operations (updates, retrieving data from db and etc.) I use async tasks. As up till now I didn't see why I shouldn't use them, but recently I experienced that if I do some operations some of my async tasks simply stop on pre-execute and don't jump to doInBackground. That w...
Casperjs/PhantomJs vs Selenium
...lly by changing the underlying WebDriver implementation to Chrome, Firefox etc.
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Understanding prototypal inheritance in JavaScript
...ALL instances. This means inst1.arr.push['three'], inst2.arr.push['four'], etc., will show up for all instances! Essentially, static behavior that you probably don't want.
You second block defines the fly method in the constructor. This means for every time that it's called, a "method object" will b...
Canary release strategy vs. Blue/Green
... version will perform (integrate with other apps, CPU, memory, disk usage, etc).
Blue/Green:
It is more about the predictable release with zero downtime deployment.
Easy rollbacks in case of failure.
Completely automated deployment process
...