wretch | tiny wrapper built around fetch with an intuitive syntax | HTTP library

I have a react component using Hooks where I click a button to make API calls to the Hacker News API and push the results into an array. Then I set the state of "stories" to be that array full of stories.

I have a second function fired off by a button which console logs the state of "stories" and console.log's a .map returning each stories title. All of this works just fine.

If I attempt to use a .map in the return of the component it does not work. If I initalize the state of "stories" to be ["test", "test1", "test2"] the .map works but as soon as I hit my button to set the state to be the array of stories the .map stops working. No error messages just the content goes away.

Here is where I import React and set the initial state, I've used Axios, Fetch and Wretch to make the API calls, all with the same results:

I have 2 pre tags. The first one contains guitar chords which must be above the the lyrics beneath exactly. The 2nd pre tag contains the lyrics. It looks something like this when rendered on screen. (Not showing exact markup, this is just to demo the issue)

Let's say I wan't to update a nickName of Person entity, with rule that this nickName is used by up to 5 other Persons. How should I do it?

Should I do validation in domain service, before calling an update?

Or is it better to pass a personRepository into PersonEntity.update(...) method, and do the search and validation inside entity update method?

Additional clarification:

@plalx idea of creating additional entity for executing this rule is clever.

When I am reading about DDD I often read that passing a repository into entity is not recomended (if not evil). That's why I try to find an example where we need a repository or some other service in entity). I actually don't know if only passing repository is bad and service is ok, or passing a service into entity is similarily discouraged.

Let's assume that this rule is not so hard and important business rule, and we can have multiple similar rules (so many, that creating an additional entity for each rule for each attribute we want to validate is a little bit overengineered). Lets assume we can allow 6 or 7 same nicknames in case of concurrent update (we only want to limit them to reasonably small number) and check of

I am trying to create a simple parser in Java using JFlex and Jacc. For testing, I wrote a simple lexer-parser combo to recognize strings and numbers. I managed to connect the lexer and the parser but can not handle new line characters (ASCII 10) sent from System.io.

Here is lexer.flex

First of all, excuse me for my (sometimes) bad English, I'm french. I'm actually working on a role game project. The goal is to create a little macOS software (a generator) using Swift and Xcode that can create a potion (an effect associated with a potency) (like : "Fortify Speed 7/10") from multiple parameters. The app allows the user to enter two parameters : ingredients (selected in pop-up menus) and a dice roll (put in a text field). If those two (or more) ingredients have an effect in common, the soft makes an addition of the value of both effects and return this : ""effect in common" + (value of the 1st ingredient effect + value of 2nd ingredient effect)". The result can change during the operation depending on the dice roll, but it doesn't matter here. Here is an exemple to understand what I'm saying :

1st ingredient : "Cat's Claw Bark" -> Resist Lightning (4/10); Resist Psychic (3/10); Acid Damage (3/10); Fear (3/10); Invisibility (1/10). || 2nd ingredient : "Grape Holly" -> Cure Disease (5/10); Resist Cold (4/10); Heighten Medicine (4/10; Resist Lightning (3/10); Force Damage (2/10.

Because both ingredients have an effect in common (Resist Lightning), the soft returns that effect with an addition of the potency of the two effects. So it returns : "Resist Lightning (7/10)"

Here is my first question : How can I convert this into Swift code ? I've tried many ways but nothing useful. I tried to use arrays, dictionaries, arrays into dictionaries, but I'm still facing the same problem : How can I attribute multiple parameters (effects in this case) and types (String for the name of the effect and Int for its potency) to an instance ? (If it's the right question). My second question is : How can I compare keys (not values) of a dictionary to match a result ?

Maybe like this, using a dictionary, but I'll need to display in the result not only the value of the key in the dictionary, but the key itself. Also, I'll need to compare the keys, not the values :

So I am in a JavaScript/Jquery class and for my current assignment I need to insert a back to top link after the 4th paragraph within an article. I have seem that this is a way to select a specific paragraph:

There are two examples on the w3.org's blockquote-page:

Example 14:

I'm trying to build a naive bayes based classifier for 1000 positive+negative labled IMDB reviews (txt_sentoken) and weka API for Java.

As I wasn't aware of StringToWordVector, which basically provides a BagOfWords model that reaches an 80% accuracy, so I did the vocabulary building and vector creation myself, with an accuracy of only 75% :(

Now I'm wondering why my solution is performing so much worse.

1) From my 2000 reviews, I build the BagOfWords:

i am attempting to restore a backup database file using WiX, and the database is created but none of the tables and data are restored. it seems as though it is only creating the database and doing nothing else. not sure if this is WiX related or has something to do with MSSQL usage. here is the WiX XML: