Hedwig | Send email to any SMTP server | Email library
kandi X-RAY | Hedwig Summary
kandi X-RAY | Hedwig Summary
Hedwig is a Swift package which supplies a set of high level APIs to allow you sending email to an SMTP server easily. If you are planning to send emails from your next amazing Swift server app, Hedwig might be a good choice.
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QUESTION
I'm building a web server using NodeJS, and I'm using the Docker Tools that Nix provides to build images for my server.
I have the following Dockerfile that I'm tring to convert into a .nix
file
ANSWER
Answered 2021-Jan-13 at 10:43Inside Nix, you can't run npm install
. Each step can only do one of two things:
- either compute a new store path without network access: a regular derivation
- or produce an output that satisfies a hardcoded hash using a sufficiently simple* process that can access the network: a fixed output derivation
These constraints ensure that the build is highly likely to be reproducible.
npm install
needs access to the network in order to fetch its dependencies, which puts it in the fixed output derivation category. However, dockerTools.buildImage
will execute it in a regular derivation, so it will fail to contact the npmjs repository.
For this reason, we generally can't map a Dockerfile directly to a series of buildImage
calls. Instead, we can build the software with the Nix language infrastructures, like yarn2nix
, node2nix
or the various tools for other languages.
By doing so, your build becomes reproducible, it tends to be more incremental and you don't have to worry about source files or intermediate files ending up in your container images.
I'd also recommend to limit the contents
parameter to a pkgs.buildEnv
or pkgs.symlinkJoin
call, because the contents are copied to the root of the container while also remaining in its store.
*: sufficiently simple excludes anything beyond fetching a single resource, because that tends to be too fragile. If, for any reason, the fixed output derivation builder produces a different result and the only way to fix it is by changing the output hash, your entire build is essentially not reproducible.
QUESTION
I created a custom class with the following properties, methods and instances:
...ANSWER
Answered 2020-Nov-06 at 20:15You could place the __repr__
or __str__
method inside the class, and make it return what you want to have printed out when you print the object.
An example would be:
QUESTION
Adapted from here: http://sridhargaddam28.blogspot.com/2017/03/sql-puzzle.html
Setup
Each duck belongs to a particular species and lives in one of the several ponds. Each pond is described by its temperature and location city. Each species is described by two values: its thermal preferences and its temperature limit. Depending on their thermal preferences, duck from a given species may prefer temperatures not higher or not lower than the temperature limit. A duck of a certain species will only feel comfortable if the temperature in the pond fulfills its thermal preferences(i.e. it is above/below or equal to the species' limit temperature).
The column temp_preferences in table species determines whether temp_limit is minimum ("+") or maximum ("-") acceptable temperature for the given species. Rows in all tables are ordered by the column id. For each pond we would like to count the ducks which live in it and feel comfortable.
You are giving 3 tables: species, ponds and ducks
Question
Write an SQL query that returns a table consisting of 2 columns: pond_id, happy_ducks, ordered by pond_id. Every pond should appear in this table.
Setup Code for SQLFiddle (sqlfiddle.com)
...ANSWER
Answered 2020-Oct-06 at 17:33You are filtering by comparing pond and species temperature. If there is no duck, there is no species and the query is comparing the pond temperature to a NULL species temperature, which fails.
To get the empty pond, you need to explicitly consider this case in the where clause, by adding OR s.id IS NULL
QUESTION
We are validating our XSD through https://www.freeformatter.com/xml-validator-xsd.html but it throws an error:
S4s-elt-must-match.1: The Content Of 'filmliste' Must Match (annotation?, (simpleType | ComplexType)?, (unique | Key | Keyref)*)). A Problem Was Found Starting At: Sequence.
Can someone help us?
Below is our XML and XSD Code (We changed the schemaLocation in the XML to XXXX just for the code preview):
...ANSWER
Answered 2020-Mar-26 at 16:18The error means what it says:
QUESTION
I am working on my app, and I keep getting this error when I add a package so I can import it.
...ANSWER
Answered 2018-Mar-28 at 10:02You should write it like this.
QUESTION
I need help on the optimization of a batch-file to get multiple xml tags of over a thousand xml files into a .txt or .csv.
The .xml's are all in the same format. They are clinical studies and look like this:
...ANSWER
Answered 2017-May-28 at 05:15@ECHO Off
SETLOCAL
SET "sourcedir=U:\sourcedir"
SET "destdir=U:\destdir"
:: SET "tags=overall_official lead_sponsor official_title results_reference overall_status"
SET "tags=%*"
FOR /f "tokens=1delims=" %%a IN (
'dir /b /a-d "%sourcedir%\*.xml" '
) DO (
REM Clear detected-tags flags for each file "%%a"
FOR %%t IN (%tags% malformed) DO SET "%%t="
REM remove "rem" from following line to delete any existing result file
REM del "%destdir%\%%~na.txt" >nul 2>nul
REM Read each line to %%L - usebackq to allow "quoted filenames"
FOR /f "usebackqdelims=" %%L IN ("%sourcedir%\%%a") DO (
REM remove leading spaces from %%L into %%P
FOR /f "tokens=*" %%P IN ("%%L") DO (
REM tokenise on "<>"
FOR /f "tokens=1-3*delims=<>" %%w IN ("%%P") DO (
IF "%%z" neq "" SET "malformed=%%z"
FOR %%t IN (%tags%) DO IF "%%w"=="%%t" (SET "%%t=Y") else IF "%%w"=="/%%t" (SET "%%t=")
SET "report="
FOR %%t IN (%tags%) DO IF DEFINED %%t SET "report=Y"
REM (1 of 2) un-rem this to deposit in individual filenames
REM (
IF DEFINED report (
REM we may have 1,2 or 3 tokens
REM if 3, output token 2
REM if 2, output token 1 if token 2 starts "/", token 2 otherwise
REM if only 1, output entire line unless it is a target token
IF "%%y" equ "" (
IF "%%x" equ "" (
REM only one token
FOR %%t IN (%tags%) DO IF "%%w"=="%%t" (SET "report=") else IF "%%w"=="/%%t" (SET "report=")
IF DEFINED report ECHO %%L
) ELSE (
REM two tokens
ECHO %%x|FINDSTR /b "/">NUL 2>NUL
IF ERRORLEVEL 1 (ECHO %%x) ELSE (ECHO %%w)
)
) ELSE (ECHO %%x)
)
REM (2 of 2) un-rem this to deposit in individual filenames
REM )>>"%destdir%\%%~na.txt"
FOR %%t IN (%tags%) DO IF "%%y"=="/%%t" (SET "%%t=")
FOR %%t IN (%tags%) DO IF "%%x"=="/%%t" (SET "%%t=")
)
REM pause
)
)
)
GOTO :EOF
QUESTION
ANSWER
Answered 2017-Dec-03 at 18:49You should use closest()
method to get ancestor li
.
QUESTION
I am learning psql, and pretty confused with the CASE keyword.
Say I have a table "pets".
...ANSWER
Answered 2017-Jul-14 at 23:12As per PostgreSQL documentation (https://www.postgresql.org/docs/current/static/functions-conditional.html), the proper way to a case expression is:
CASE WHEN condition THEN result
[WHEN ...]
[ELSE result]
END
According to the code you posted, you are ending the expression with END CASE when it should be END. Also you forgot to add a comma after the asterix. I would write your query in the following way:
SELECT *,
CASE
WHEN length(name) > 6 THEN 'long'
ELSE 'short'
END as msg
FROM pets WHERE gender = 'female';
QUESTION
I am trying to add Hedwig Library to my Existing project but i am unable to do so. I added other Libraries through CocoaPods but this one doesn't have it.
I am new to iOS Development and couldn't figure out what to do.
I even read other articles on this (1, 2 and many others) but while reading it I get lost and couldn't understand what to do...
They tell me how to create a new Project but I already have one and I want to add the library to the existing one..
Thanks...
...ANSWER
Answered 2017-Mar-14 at 20:46The documentation is pretty self explanatory @Syed.
It tells you to add the repo to your Package.swift
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