Go | actual combat ] study notes | Web Framework library
kandi X-RAY | Go Summary
kandi X-RAY | Go Summary
[Go from entry to actual combat] study notes, learn Go and Gin framework from scratch, the basic syntax includes 26 demos, the Gin framework includes: Gin custom routing configuration, Gin uses Logrus for logging, Gin data binding and verification, Gin custom error handling, Go gRPC Hello World...
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Go
Go Key Features
Go Examples and Code Snippets
def do_something(back_pointer, goal, start):
grid = np.chararray((n, n))
for i in range(n):
for j in range(n):
grid[i][j] = "*"
for i in range(n):
for j in range(n):
if (j, (n - 1) - i) in blocks:
def go_back(self):
"""Go back one place in the history, if possible.
Decrease the pointer value by 1, if possible. Otherwise, the pointer value
will be unchanged.
Returns:
The updated pointer value.
Raises:
ValueErr
def go(self):
self.parse_args()
self.target_platform_ = self.PLATFORMS_.get(self.args.target_platform)
if self.validate_args():
self.set_build_args()
self.write_build_args()
else:
print("Error.")
Community Discussions
Trending Discussions on Go
QUESTION
Recently I've been coding a clicker game and now have run into a problem with the onclick
function. What I'm trying to do is on the first click, have it change into certain text, and on the second and third clicks change it to a different text. However, on the fourth click, I'd like it to disappear.
However, it disappears on the third click instead of the fourth click. The third click is supposed to show more text, and then call a function and vamoose. It just disappears. Here is my code:
...ANSWER
Answered 2021-Jun-15 at 20:57I'm going to rewrite your code because it seems to be missing something.
In this code, I'm using a single event handler. Then using a counter and switch statement to determine the current click count.
QUESTION
TL;DR: Why do I name go projects with a website in the path, and where do I initialize git within that path? ELI5, please.
I'm having a hard time understanding the fundamental purpose and use of the file/folder/repo structure and convention of projects/apps in the go language. I've seen a few posts, but they don't answer my overarching question of use/function and I just don't get it. Need ELI5 I guess.
Why are so many project's paths written as:
...ANSWER
Answered 2021-Jun-16 at 02:46Why do I name projects with a website in the path?
If your package has the exact same import path as someone else's package, then someone will have a hard time trying to use both packages in the same project because the import paths are not unique. So long as everyone uses a string equal to a URL that they effectively "own", such as your GitHub account (or actually own, such as your own domain), then these name collisions will not occur (excepting the fact that ownership of URLs may change over time).
It also makes it easier to go get
your project, since the host location is part of the import string. Every source file that uses the package also tells you where to get it from. That is a nice property to have.
Where do I initialize git?
Your project should have some root folder that contains everything in the project, and nothing outside of the project. Initialize git in this directory. It's also common to initialize your Go module here, if it's a Go project.
You may be restricted on where to put the git root by where you're trying to host the code. For example, if hosting on GitHub, all of the code you push has to go inside a repository. This means that you can put your git root in a higher directory that contains all your repositories, but there's no way (that I know of) to actually push this to the remote. Remember that your local file system is not the same as the remote host's. You may have a local folder called github.com/myname/
, but that doesn't mean that the remote end supports writing files to such a location.
QUESTION
I have a dynamic query that adds WHERE clauses according to the parameters received:
...ANSWER
Answered 2021-Jun-15 at 23:39I found the answer with the following lines of code:
QUESTION
I'm trying to decrease the bundle size of my Vue project, which scaffolded by the vue-cli, by using CDN of firebase, Vue, and Vuetify.
So, I've added links of these CDN in public/index.html
as follow:
ANSWER
Answered 2021-Jun-16 at 01:31If you are using vuetify from vue-cli-plugin-vuetify
(vue add vuetify
), treeshaking and auto component import is enabled by default, by using vuetify-loader
.
If you look into the source code of vue-cli-plugin-vuetify
, it only uses vuetify-loader
if it is present in your package.json
. So removing vuetify-loader
from package.json
should disable this behavior.
QUESTION
I have a data frame including three columns named 'Altitude', 'Distance', 'Slope'. The column of 'Slope' is calculated using the two first columns 'Altitude', 'Distance'. @ the first step the purpose was to calculate 'Slope' using a condition explained below: A condition function was deployed to start from the top column of the "Distance" variable and add up (sum) values until the summation of them is greater or equal to 10 (>=10). If this condition corrects then calculate the "Slope" using the given formula: Slope=Average(Altitude)/(sum(Distance)). The summation of the 'Distance' was counting from the first value of that to the index that the 'Distance' has stopped there). The following code is for the above explanation (By Tim Roberts):
...ANSWER
Answered 2021-May-19 at 13:38Use this code after you calculate s
to get slope column with desired values:
QUESTION
I am new in Python, I would like to ask how can make my code work. in login() function, if the username and password are correct, log = True, then when go to main() function, log variable is not defined.
Then i found online where add log = login() in main() function, like this
...ANSWER
Answered 2021-Jun-15 at 06:55I modified your code.this will works fine
but the customerMian() and adminMain() function not defined.
QUESTION
Hi I tired to check null values of my data frame(house) which has 81 columns but
house.isnull().sum()
display only few columns data.
ANSWER
Answered 2021-Jun-15 at 23:08Try running this line before you get the output
pandas.set_option('display.max_rows', 500)
See this other article on this
QUESTION
I am trying to define a subroutine in Raku
whose argument is, say, an Array of Ints (imposing that as a constraint, i.e. rejecting arguments that are not Array
s of Int
s).
Question: What is the "best" (most idiomatic, or straightforward, or whatever you think 'best' should mean here) way to achieve that?
Examples run in the Raku
REPL follow.
What I was hoping would work
...ANSWER
Answered 2021-Jun-15 at 06:40I think the main misunderstanding is that my Int @a = 1,2,3
and [1,2,3]
are somehow equivalent. They are not. The first case defines an array that will only take Int
values. The second case defines an array that will take anything, and just happens to have Int
values in it.
I'll try to cover all versions you tried, why they didn't work, and possibly how it would work. I'll be using a bare dd
as proof that the body of the function was reached.
#1
QUESTION
Currently I have 3 tables like below
Master
ID_NUMBER ZIPCODE 1 12341 2 12342 3 12343 4 12344Table1
ID_NUMBER CITYNAME COUNTYNAME 1 NEW YORK QUEENS 3 DETROIT SUFFOLKTable2
ID_NUMBER CITYNAME COUNTYNAME 2 ATLANTA ROCKLAND 4 BOSTON WINCHESTERMy desired output is like below. I want to filter based on the zipcode from master table
ID_NUMBER ZIPCODE CITYNAME COUNTYNAME 2 12342 ATLANTA ROCKLANDHow would i go about writing a query for this? Below is what i have tried but it's giving me null values if the ID_NUMBER is not found on that particular table.
...ANSWER
Answered 2021-Jun-15 at 22:37Use COALESCE()
:
QUESTION
I have trouble understanding the first line of code inside this implementation of the bsearch function in C. I understand the search algorithm itself and I have played around with this function to get a good grasp of it but I still do not get what
...ANSWER
Answered 2021-Jun-15 at 21:44Within the function you need to find each element in the passed array. However the type of the array is unknown. You only know the size of each element of the array and the starting address of the array that is passed through the parameter base0. of the type const void *
..
To access an element of the array you need to use the pointer arithmetic. But the type void is incomplete type. Its size is unknown/ So you may not use the pointer of the type (const) void *` in expressions with the pointer arithmetic.
Thus this declaration
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