Several months have passed since support for generator functions and the yield keyword arrived in Node.js v0.11.2. This news was greeted with great excitement, because generator syntax provides a much cleaner alternative to using callbacks when writing asynchronous server-side code.
One of the biggest benefits of using JavaScript on the server is that you can (in theory at least) run the very same code in a web browser. However, if you choose to use generator functions in Node.js, you end up with a bunch of code that can't be executed client-side. So there's the rub: native support for generators is only so exciting because it enables you to write really clean, powerful, unportable code.
Some of us on the JavaScript Infrastructure team at Facebook got restless waiting for the future to get here, so we developed a tool called regenerator to replace generator functions with efficient JavaScript-of-today (ECMAScript 5 or ES5 for short) that behaves the same way. Since the tool itself is implemented in ES5, you can try it right now, in this web browser, without leaving this web page.
Regenerator relies heavily on the Esprima JavaScript parser and two libraries that we maintain for manipulating abstract syntax trees, ast-types and recast. It is similar in spirit to Google's Traceur Compiler, which supports generators and many other ES6 features through source transformation, but we would argue it compares favorably to Traceur in several ways.
Depending its version, not all features available in your browser runtime will work in the Node runtime. Promises (with await/async) are supported in current versions of node, but since you are using Parcel, which by default uses Babel, your async/await calls will be compiled to use regenerator-runtime, a polyfill for that functionality. You can either import "regenerator-runtime/runtime" in every entry file (not recommended if you don't need the polyfill!), or you can tell babel what your runtime is.
I was trying repair an old Hitachi hard drive of mine with HDD Regenerator and plugged it in with a SATA to USB cable (shown in 1).But when I use HDD Regenerator and used the prescan option it proceeded up to 102MB, then it stopped with this error (shown in 2).
Modern harddisks have a number of "spare" sectors they can use if a sector goes bad. They do that by reallocating the sector, which means they update an internal map that leaves the bad sector where it is, and uses one of the spare sectors instead.
The fact that this happened so often for your drive means that something is seriously wrong with your drive. You cannot "repair" it. If you keep using it, it will just continue to give you errors, and you'll loose data.
If you want to benefit from the full power of Hdd regenerator you will have to run it at boot time and repair like that. So connect your HDD directly to a computer and make a bootable device with HDDR.
Not knowing where to put it put it on here but if you go somewhere else and have to move I hope will forgive me.
My question is ... there is a Mac version of windows hdd regenerator? or any equivalent program?
good and I already tried the tech tool and I solved the problem with the hard drive, I just said to be in excellent conditions and formats it and everything but when I start to pass on information to the crashes, but at work when a mate area of systems inspected it with the hdd regenerator found many bad sectors ...
I'll try that as DiskWarrior to see if it's good.
thanks
bueno yo ya e probado el tech tool y no me resuelve el problema con el disco duro, solo me dice que esta en exelentes condiciones y le da formato y todo pero cuando comienzo a pasar informacion a el se cuelga, pero en el trabajo cuando un compaero del area de sistemas lo reviso con el hdd regenerator encontro muchos sectores daados...
For me, the DACSr and the P20 responded more to a better power cable than the DMP, BHK pre, or BHK monos. I would give a slight deference to putting your best cable in front of the regenerator, and the next on the DAC. Let your ears be the judge.
Purpose:
The regenerator's purpose is to manage the building of PDTs on the scratch schema. Its major tasks are to check datagroup triggers, build new PDTs that have been pushed to production and rebuild existing production PDTs whose trigger values have changed.
Number of Regenerator Threads:
Every connection has one regenerator thread. Since the regenerator is only a single thread, it can only perform one operation at a time. This means that it can only check a single trigger or build/rebuild a single PDT at a time (unless parallel PDTs are enabled on that connection, then multiple PDTs can be built at a time).
There is a maximum of 25 regenerator threads per instance. However, there is still only one thread per connection. This means that 25 PDTs could theoretically build simultaneously only if there were 25 different databases connected to the Looker instance. If there are more than 25 connections with PDTs enabled on an instance, multiple connections will share the same regenerator thread.
Regenerator Schedule:
The regenerator runs on the schedule set in the `PDT And Datagroup Maintenance Schedule` section of the connection settings. The schedule is set using a cron expression. A cron expression is a string comprising five or six fields separated by white space that represents a set of times. The default value is every 5 minutes. More on cron expressions here.
Note: The `PDT And Datagroup Maintenance Schedule` setting will accept a cron string for a timeframe that is more frequent than every 5 minutes, however the regenerator will only run at most every 5 minutes.
In terms of database performance, if the regenerator is building a particularly resource intensive table then this could have an affect on other queries being run on the database and affect query response time. This is more so caused by the PDT than the frequency of the Regenerator process. If a table like this is building frequently, it can certainly be combated by decreasing the regenerator frequency, though this is not the recommended resolution since decreasing the regenerator frequency would impact the rebuild frequency of all PDTs, not just the one that is consuming resources. My recommendation in this case would be to 1. Improve performance of the PDT if possible 2. Ensure the PDTs trigger is only set to trigger when underlying data in the table has changed. Here are a couple of docs on building performant PDTs:
-us/articles/360023742593-Identifying-and-Building-PDTs-for-Performance...
-us/articles/360023726114-Improving-PDT-Performance
CRUCIFORMS range consists of customizable fused cast regenerator packings designed to maximize thermal efficiency, allowing glassmakers to boost furnace energy performance, lifetime, improve glass quality and making way for more sustainable glassmaking.
Checker packing material for high efficiency regenerator.
Typically used in the middle and bottom part of the checker packing where sodium sulphate condensation takes place.
Dedicated to regenerator packing of furnaces producing sodalime glass under non-reduced conditions.
Checker packing material for high efficiency regenerator.
Typically used in the middle and bottom part of the checker packing where condensation takes place.
Dedicated to regenerator packing of furnaces operating under reduced conditions.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
We study the performance of a multichannel version [M. Vasilyev and T.I. Lakoba, Opt. Lett. 30, 1458 (2005)] of the all-optical Mamyshev regenerator in a practically important situation where one of its key components - a periodic-group-delay device - has a realistic amplitude characteristic of a bandpass filter. We show that in this case, the regenerator can no longer operate in the regime reported in our original paper. Instead, we have found a new regime in which the regenerator's performance is robust not only to such filtering, but also to considerable variations of regenerator parameters. In this regime, the average dispersion of the regenerator must be (relatively) large and anomalous, in constrast to what was considered in all earlier studies of such (single-channel) regenerators based on spectral broadening followed by off-center filtering. In addition, hardware implementation of a regenerator in the new regime is somewhat simpler than that in the original regime.
b37509886e