547 posts
Today I suddenly noticed a spike in my site's traffic, with an extra chunk of referral traffic. Per the traffic stats it came from the classic-cases section of the official REN domain website, where my site sits last under the 'Personal Blog: Programmer Tech Blog' category.
Rambler Group, the former employer of Nginx creator Igor Sysoev, has filed an infringement lawsuit against Nginx, arguing that Nginx is a program Sysoev developed during his time at Rambler, and that all Nginx copyright should belong to Rambler Group.
From the table above we can see that everything in Scala is an object — there are no primitive types like in Java. Some concepts also differ from Java: Scala includes a few notions of 'nothingness' (Null, null, Nil, Nothing, None, and Unit). Null is a trait (if you're not familiar with traits, think of it as somewhat like an abstract class in Java). There does exist an instance of null.
On the IntelliJ IDEA startup screen, go to Configure → Plugins, type Scala in the search box, and install the Scala plugin; IDEA will ask to restart after installation for the plugin to take effect. Next, create a Scala project: click Create New Project, choose Scala on the left and IDEA on the right, click Next, name the project (here, HelloScala), then pick a storage location. If this is your first build, you'll also need to download the Scala SDK.
Locally the file reads fine, but once packaged as a JAR and uploaded to the server it can't be fetched; the error is: class path resource [xxxx] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:xxxx.jar!/BOOT-INF/classes!xxxx. Enough talk — here's the correct way: use PathMatchingResourcePatternResolver.
As early as 2015, Apple engineers added System Integrity Protection to El Capitan, requiring root to modify any system file — but malware with root could still damage system files. In Catalina 10.15, Apple engineers went further, fully separating system files from user files into a new file system that is read-only and cannot be written to.
Many friends wonder why I switched domains again. Although switching hurts a site a lot, when I come across a desirable domain I can't resist switching. What's the story behind the newly adopted [renfei.net]? I was curious too, so I looked up the history of the domains I care about.
The author found the USB drive transfer speed very slow in daily use — write at only 4MB/s and read at only 10MB/s — even though the drive has the blue USB 3.0 port. Why so slow? So I started exploring USB drives.
When renovating a home we pre-bury Ethernet cables, and we also buy some in daily life, but the market is a mess — Cat5e, Cat6, Cat6a, Cat7, even Cat8 and Cat9. How not to get ripped off by shady sellers? Today I'll explain how to choose Ethernet cables.
Every day we code we face interrupted trains of thought, or pick up today where we left off yesterday. With nothing recorded, we may forget what's left to do, and even lose the solution we had in mind.
