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Conventions for exceptions or error codes
Yesterday I was having a heated debate with a coworker on what would be the preferred error reporting method. Mainly we were discussing the usage of exceptions or error codes for reporting errors between application layers or modules.
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Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
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You can use the logical 'OR' operator in place of the Elvis operator:
For example displayname = user.name || "Anonymous" .
But Javascript currently doesn't have the other functionality. I'd recommend looking at CoffeeScript if you want an altern...
How to test if a string is JSON or not?
...JAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
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What does it mean if a Python object is “subscriptable” or not?
...cally means that the object implements the __getitem__() method. In other words, it describes objects that are "containers", meaning they contain other objects. This includes strings, lists, tuples, and dictionaries.
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what is “strict mode” and how is it used?
...ve been looking over the JavaScript reference on the Mozilla Developer Network, and I came across something called "strict mode" . I read it over and I'm having trouble understanding what it does. Can someone briefly explain (in general) what its purpose is and how it is useful?
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Amazon Interview Question: Design an OO parking lot [closed]
...ns will it have. It should say, full, empty and also be able to find spot for Valet parking. The lot has 3 different types of parking: regular, handicapped and compact.
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地图组件（高德地图） · App Inventor 2 中文网
... 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 地图组件（高德地图）
地图组...
How do I use CREATE OR REPLACE?
Am I correct in understanding that CREATE OR REPLACE basically means "if the object exists, drop it, then create it either way?"
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How does the Amazon Recommendation feature work?
...on of primary driver items and the identification of affinity items (accessory upsell, cross sell).
Keep in mind the data sources they have to mine...
Purchased shopping carts = real money from real people spent on real items = powerful data and a lot of it.
Items added to carts but aband...
How to exit a 'git status' list in a terminal?
...t git is probably running its output into your $PAGER program, likely less or more. In either case, typing q should get you out.
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