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kandi X-RAY | Human Summary
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Human
Human Key Features
Human Examples and Code Snippets
def parse_readable_size_str(size_str):
"""Convert a human-readable str representation to number of bytes.
Only the units "kB", "MB", "GB" are supported. The "B character at the end
of the input `str` may be omitted.
Args:
size_str: (`st
def bytes_to_readable_str(num_bytes, include_b=False):
"""Generate a human-readable string representing number of bytes.
The units B, kB, MB and GB are used.
Args:
num_bytes: (`int` or None) Number of bytes.
include_b: (`bool`) Includ
public static String encode(String message, String cipherSmall) {
StringBuilder encoded = new StringBuilder();
// This map is used to encode
Map cipherMap = new HashMap<>();
char beginSmallLetter = 'a';
Community Discussions
Trending Discussions on Human
QUESTION
I am currently creating class diagrams in UML for a movie test domain. I would like to know if I am doing it right. Well, I have two alternatives (the first version in the first picture, the second in the second - I think the first one is better). I'm wondering if I've established the so-called "relationship owner" correctly, that is, from which class to which direction the relationships go. I also don't know if I didn't get multiplicity wrong (one to one, one to many etc.).
So on my domain I would like to have movies of course, the actors starring in those movies and directors. I wonder if the class name "Character" is good in this case, because I mean all the characters that take part in a movie - it can be director, actor but also for example "Batman". Maybe I should make a distinction here between "Movie Character" and then "Human", "Monster", whatever. But I don't know how to do it elegantly, will I then inherit from the Character class? I'm also wondering if I shouldn't put classes like City or Country together in one class called Address - but I wanted the classes to take attributes like in this case, that one is Master and the other is detail - and the relationship set in the right direction. I use only relations such as Inheritance and Dependency, I do not know if I should change something in this case.
Version 1
Version 2
Thanks in advance for any suggestions or advice!
...ANSWER
Answered 2021-Jun-15 at 11:58Use inheritance very carefully. Prefer association over inheritance whenever your inheritance is not a permanent truth from the birth to the death of an object. ANd keep in mind that dependencies between classes do not make any promises about objects of those classes.
Some more explanationsSome clarifications on the UML syntax:
- I understand that your plain thick lines ended with a small hollow triangle represent a specialization/generalization relationship (aka inheritance). If this is correct, the triangle should be larger to avoid visual confusion. Moreover multiplicity makes no sense with inheritance and should be removed.
- I understand that with the dotted line you intend to represent an association with multiplicity. If this is correct:
- the association should be plain lines, because dotted lines are for dependencies, and multiplicity would make no sense.
- the meaning you give to the arrow head would be unclear. Do you use them to document navigability? In case of doubt, remove them. If you want to document ownership of the association end, use the dot notation instead. (we cannot say if it’s right or wrong, since it’s a decision on how your model sees the associations)
In view of your comments and the third model linked therein, there are some key UML semantics you need to keep in mind:
- Inheritance is an ultra-strong relationship which means "is (always) a". In your example, you may say that an
Actor
is always aPerson
, and hence, everything you say about aPerson
is also true for anActor
. By the way, you should avoid repeating inherited properties or methods, since it could create some ambiguity. - Inheritance is not a substitute for aggregation, composition or association. You can for example not say that a
CrewMember
(one person) is always aCrew
(a group of persons). ACrewMember
belongs to aCrew
but there are things that the crew can do together that the individual member can't. - Inheritance is not suitable if it's not always true. A
Character
for example may often be aPerson
. But not always;: you can have ghost characters, comic characters, robot characters, or animals. - Association means that there is some structural relation between some instances of the associated classes. For example, that one ore several persons live in one city, seems a very relevant assocaition.
- Dependency means that a class is dependent on another, i.e. without the other class it would not work or something would be missing. It's a statement about the classes and not the objects. I.e. If you meant to say that
Person
is dependent onCity
you just say that the class Person would not work without knowing about City (for example, because the operationsendPostCardFrom(city: City)
needs an argument of that type) but you do not say anything about persons X, Y and Z. If you want that X, Y and Z are related to city a, b, and c, you need an association.
About the model content, I'll not decide for you and there is no single truth. I therefore prefer to draw your attention at potential issues. I raise them in form of a question, up-to you to adjust the model based on your own answer:
Common issues between the both variants:
- Are
Actor
andDirector
reallyPersons
? In this case, what with the Persons that are Actors and Directors at the same time (g.g. Clint Eastwood) ? Or areActor
andDirector
just roles that aPersons
takes for a givenMovie
? - Is a
Character
really related only to 1Movie
? What to do with Indiana Jones, where the same character appears in several movies? - In a similar way, I wonder if there's really a single
Person
who lives in aCity
or if this should not be a many-to-many association?
- Are
Issues regarding the differences: `
- Is a
Person
in version 1 aCharacter
(inheritance) ? Or is aCharacter
a representation of aPerson
(association: represents) ? - Is a
Character
in version 2 really anActor
and by transitivity also aPerson
(inheritance)? Or is theCharacter
only associated with anActor
(association: plays) ?
- Is a
It's up to you to decide, but wherever I asked a question about association or inheritance, you should better think twice before using inheritance (i.e. prefer association/composition over inheritance)
QUESTION
I have a problem with creating a function that will stop all the code until it finishes. I thought making async/await. In that function I should make fetch, but it says promise {}, when I return the result CODE:
...ANSWER
Answered 2021-Jun-13 at 13:45When you add async prior to the function then this means that the function will return a promise in response, and in order to work with that result You need to do something like this
QUESTION
Sorting data from huge lists with two levels of keys is helpful for interpreting dataset and calling by couple or one level of keys some slice of data, especially when creating plots.
I use a very naive and, I guess, inefficient way to create from a 2D-list of data a dict of dicts (two levels of keys) that returns a list of data. How to make this code more elegant, possibly faster and more readable? I guess using collection module but I didn't find a smart way.
Example:
...ANSWER
Answered 2021-Jun-15 at 07:35from itertools import groupby
first=lambda l: l[0]
def group_by_first(listo):
grouped = groupby(sorted(listo,key=first), key=first) # group by first elem, need to sort first
return {k: [e[1:] for e in g] for k,g in grouped} # remove key (first elem) from values
{k: group_by_first(l) for k,l in group_by_first(listo).items()} # group first elem and then by second
QUESTION
I have created 2 buttons and a display windows. I want the display windows can add 1 if I click + button. I want the display windows can subtract 1 if I click - button. However, the function seems doesnt works. May I know what is the problem of my code:
...ANSWER
Answered 2021-Jun-13 at 22:30You need to change the first minus in humanGuess.value = -humanGuess.value - 1;
to a plus. The +
is used to return the numeric representation of a number a.k.a Unary plus. The way you have it originally, it's flipping the number from negative to positive or vice versa, and then subtracting 1 a.k.a Unary negation.
QUESTION
Problem
I have a large JSON file (~700.000 lines, 1.2GB filesize) containing twitter data that I need to preprocess for data and network analysis. During the data collection an error happend: Instead of using " as a seperator ' was used. As this does not conform with the JSON standard, the file can not be processed by R or Python.
Information about the dataset: Every about 500 lines start with meta info + meta information for the users, etc. then there are the tweets in json (order of fields not stable) starting with a space, one tweet per line.
This is what I tried so far:
- A simple
data.replace('\'', '\"')
is not possible, as the "text" fields contain tweets which may contain ' or " themselves. - Using regex, I was able to catch some of the instances, but it does not catch everything:
re.compile(r'"[^"]*"(*SKIP)(*FAIL)|\'')
- Using
literal.eval(data)
from theast
package also throws an error.
As the order of the fields and the legth for each field is not stable I am stuck on how to reformat that file in order to conform to JSON.
Normal sample line of the data (for this options one and two would work, but note that the tweets are also in non-english languages, which use " or ' in their tweets):
...ANSWER
Answered 2021-Jun-07 at 13:57if the '
that are causing the problem are only in the tweets and desciption
you could try that
QUESTION
I have a SummaryView
with a Report
as @State
.
A Report
is a protocol which includes some changes a user might want to make:
ANSWER
Answered 2021-Jun-08 at 12:07Your issue is immediately solved if ProposedChange
is a struct and not a class. Unless its instances have their own life cycle, then they are just holders of value, so should be semantically a struct.
The reason your issue is solved is because mutating a property of a struct mutates the struct, so SwiftUI knows to recompute the view, whereas with a class you need to subscribe to changes.
Assuming ProposedChange
is a struct:
QUESTION
If I directly use mutt command from my terminal I can see that subject is ?UTF-8B?base64_encoded(subject)?=
and for my attachment content-disposition header will be attachment; filename*=UTF-8''UTF-8_encoded_filename
. This all works fine.
But when I send this mail from java process builder, without setting any header values or any encoding just simply providing subject, to_mail values there is encoding issues, subject will be like ?unkown-8bit?B?wrong_base64_encoded(subject)
the encoded subject is wrong, so while decoding there will be question marks for some characters and for attachment value of content-disposition header attachment; filename*=us-ascii''UTF-8_encoded_filename
. So while the filename will be full of non human readable characters.
So, how can I set the correct encoding for the subject and also how to mention the correct encoding in the content-disposition header.
...ANSWER
Answered 2021-Jun-12 at 15:57Issue got resolved after running mutt command with -e set charset=utf8
.
QUESTION
When i call my funtion with a startingAngle=0 it produce a good shape with the correct size. Example:
...ANSWER
Answered 2021-Jun-09 at 21:00Your problem is one of mathematics. You said "As observed, the side length is 10px". It very definitely is not 10px. The distance from (10,5) to (5,0) is sqrt(5*5 + 5*5), which is 7.07. That's exactly what we expect for a square that is inscribed in a circle of radius 5: 5 x sqrt(2).
And that's what the other squares are as well.
FOLLOWUP
As an added bonus, here is a function that returns the radius of the circle that circumscribes a regular polygon with N sides of length L:
QUESTION
I'm using node.js for backend contact form and nodemailer for sending the message. My problem is that whenever I correctly fill inputs it still shows me an error that my inputs are not correct and it doesn't send the message. Thank you in advance
Here is my code:
Validation
...ANSWER
Answered 2021-Jun-11 at 09:18The problem is in your checkInputs() function, the function is not returning any thing but you are checking the validation status in condition
QUESTION
I have a file config.txt
that is tracked by git, it is downloaded on git clone
, but I don't want anybody changing and committing it i.e. if someone changes that file I don't want their changes to be tracked thus committed & accidentally pushed.
I still want to be able to add the potential changes of config.txt
later on, but in an explicit way(could be git add -f config.txt
or something else).
Also an extra step for doing this is not desirable so git update-index --skip-worktree
or git update-index --assume-unchanged
is not a good enough solution as it is prone to human error.
Is it possible to do so in git?
...ANSWER
Answered 2021-Jun-09 at 08:53One possible solution to that problem is to "skip" tracking the file after the repository is cloned:
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