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What is the difference between Builder Design pattern and Factory Design pattern?

...POJO creation for domain objects, whereas factory is useful for creating a service objects like PdfGeneratorFactory class. The service object could be cached within factory for more than 1 time use, whereas builder always creates a new object by design. – saurabh.in ...
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How to get screen dimensions as pixels in Android

... If you're not in an Activity you can get the default Display via WINDOW_SERVICE: WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); Display display = wm.getDefaultDisplay(); If you are in a fragment and want to acomplish this just use Activity.WindowManager (i...
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Using psql how do I list extensions installed in a database?

..._extension'::pg_catalog.regclass ORDER BY 1; Thanks to https://blog.dbi-services.com/listing-the-extensions-available-in-postgresql/ share | improve this answer | follow ...
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Express: How to pass app-instance to routes from a different file?

... why this is not the accepted answer? For dependencies you use app.use('my-service', serviceInstance) in the main router and req.app.get('my-service') in the controller as mentioned by @Feng – Felipe Feb 24 '19 at 23:58 ...
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Superscript in markdown (Github flavored)?

...like these: ™ TRADE MARK SIGN (U+2122) ® REGISTERED SIGN (U+00AE) ℠ SERVICE MARK (U+2120) Assuming your editor supports Unicode, you can copy and paste the characters above directly into your document. Alternatively, you could use the hex values above in an HTML character escape. Eg, &...
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what's the meaning of '=?' in angularJS directive isolate scope declaration?

...d in the answer, but here is a more direct link: docs.angularjs.org/api/ng/service/… – Jason Axelson Jul 25 '15 at 23:44 3 ...
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Where to place JavaScript in an HTML file?

...and no sooner. Also, depending on your users' physical location, using a service like Amazon's S3 service may help users download it from a server physically closer to them than your server. Is your js script a commonly used lib like jQuery or prototype? If so, there are a number of companies, li...
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rotating axis labels in R

...2, border = 0, cex.lab=1, cex.axis=1, font=1,col.axis="black") title(xlab="Service Providers", line=4, cex.lab=1) Finally, save the file dev.off() Output: share | improve this answer ...
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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...了.写入后记得把防火墙重起一下,才能起作用. [root@tp ~]# service iptables restart 现在IPTABLES配置表里什么配置都没有了,那我们开始我们的配置吧 (3)设定预设规则 [root@tp ~]# iptables -p INPUT DROP [root@tp ~]# iptables -p OUTPUT ACCEPT [root@tp ~...
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Setting environment variables for accessing in PHP when using Apache

...0> DocumentRoot ${mydocroot} </VirtualHost> Then finally.... service httpd restart; share | improve this answer | follow | ...