arrow | Apache Arrow is a multi-language toolbox
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kandi X-RAY | arrow Summary
Apache Arrow is a multi-language toolbox for accelerated data interchange and in-memory processing
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of arrow
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Lines of Code : 116
License : No License
Copy// bad
[1, 2, 3].map(function (x) {
const y = x + 1;
return x * y;
});
// good
[1, 2, 3].map((x) => {
const y = x + 1;
return x * y;
});
// bad
[1, 2, 3].map((number) => {
const nextNumber = number + 1;
`A string containing the $ C/GLib
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MATLAB
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status
C++
Java
Python
R
format/Versioning
format/Columnar
format/CanonicalExtensions
format/Flight
format/FlightSql
format/Integration
format/CDataInterface
format/CStr import pyarrow as pa
from datetime import date
df2 = pd.Series({'date':[date(2022,4,7)]})
df2_dat32 = pa.array(df2)
print("dataframe:", df2)
print("value of dataframe:", df2_dat32[0])
print("datatype:", df2_dat32.type)
import ast
df.astype({'col_set': str}).to_parquet('data.parquet')
df1 = pd.read_parquet('data.parquet') \
.assign(col_set=lambda x: x['col_set'].map(ast.literal_eval))
print(df1)
# Output
col_set
0 {C, B, A}
1 {F, E, D}
# It does not appear to be documented but make_write_options
# should accept most of the kwargs that write_table does
file_options = ds.ParquetFileFormat().make_write_options(version='2.6', data_page_version='2.0')
ds.write_dataset(..., fiddf = dd.from_pandas(pdf, npartitions=3)
ddf.to_parquet('C:\\temp\\OLD_FILE_NAME', engine='pyarrow', overwrite=True)
ddf2 = dd.read_parquet('C:\\temp\\OLD_FILE_NAME')
ddf2['new_column'] = 1
ddf2.to_parquet('C:\\temp\\NEW_FILE_NAME', engiimport pyarrow as pa
import pyarrow.compute as pc
def dict_encode_all_str_columns(table):
new_arrays = []
for index, field in enumerate(table.schema):
if field.type == pa.string():
new_arr = pc.dictionary_encodDF2 = DFL.astype(str)
st.dataframe(DFL2)
ddf.map_partitions(some_func)
# this will store the modified dataframe as ddf
ddf = ddf.map_partitions(some_func)
ddf = ddf.map_partitions(some_func)
ddf = ddf.persist()
ddf.to_parquet('/soDo you wish the installer to initialize Miniforge3
by running conda init? [yes|no] >>> choose 'yes'
If you'd prefer that conda's base environment not be activated on startup,
set the auto_activate_base parameter to false:
condaCommunity Discussions
Trending Discussions on arrow
QUESTION
I'm using collapse list unstyled class for showing submenus.In that sub sub menus are not showing, only first submenu is displaying but not the second one.
...ANSWER
Answered 2021-Jun-16 at 02:24You need to make sure you include jQuery with bootstrap. You can add everything by adding this to your html:
QUESTION
I am trying to have a number of columns with exact widths, and their heights split evenly between some number of elements. For some reason, despite my indicating an exact 200px width on each column, they are instead getting a computed width of 162px somehow. Chrome dev tools is showing some weird arrow thing indicating that it it was shrunk from it's intended size for some reason. I've even tried removing all of the content from the div's as possible so as to rule out some weird interaction with the size of children.
The html for the relevant area is this:
...ANSWER
Answered 2021-Jun-15 at 20:20Setting display: flex turns the sizing of child elements over to the flex container. If you don't want the individual elements to resize, set flex-grow: 0, flex-shrink: 0, and flex-basis: 200px. You can do all three using the flex shorthand:
QUESTION
A part of my form contains QGroupBox (Status Box) with 4 child QGroupBoxes arranged in a grid layout (2x2). Two bottom QGroupBoxes (Widget 1 Box and Widget 2 Box) contain widgets of fixed size (with set minimumSize and maximumSize) so they're non-resizable at all in both directions. Because of that rigid size constraints top row of QGroupBoxes (Summary Box and Helper Box) can only be resized in vertical direction.
And here comes the troublesome part. Top-left QGroupBox (Summary Box) have grid layout 5x3 while top-right (Helper Box) have vertical layout with 6 rows. If I have naive widget placement as shown on picture 1 Qt is enlarging vertical size of both labels in top row to make height of both QGroupBoxes equal (see red arrows on picture 1).
This is definitely that I don't want so I've added vertical spacer to the bottom of Summary Box and from the first glance it worked (picture 2). But only from the first glance... What you see is the minimum height of my whole form and the bottom side of spacer and last QCheckBox in the Helper Box seems to be aligned.
If I'm expanding my form vertically this spacer grows a bit and that causes the increase of height of both top QGroupBoxes. As a result spacing between QCheckBoxes increases too and we can also see that top and bottom spacing are unequal for the top-right box (see red arrows on picture 3).
I've tried to play with sizeType for my vertical spacer. If I set it to Minimum or MinimumExpanding then the spacer doesn't grow on resize (and doesn't shrink, too) but it appears to be expanded to the size as on picture 3 (corrupting spacings between QCheckBoxes too). If I set it to Maximum, Preferred or Expanding then I observe the same behavior as described above for picture 3.
What is the proper way to achieve alignment for two QGroupBoxes in a row of grid without affecting spacing between elements (e. g. in that case make vertical spacer to fit only single row of grid layout and never expand/shrink)?
ANSWER
Answered 2021-Jun-15 at 17:18Items will be aligned if both QGroupBoxes have same count of children and each row have at least one child with Expanding vertical policy. Instead of spacer use QWidget
I removed unrelated widgets and reduces number of rows to 4 for demonstration purposes (less xml).
QUESTION
In tkinter I have made a notepad and also added a scrollbar to this notepad. The problem is when I click on the scrollbar (not using any arrow keys nor mouse scroll wheel)
I have tried google but I'm not the best at finding the right websites.
Heres the code to the notepad
...ANSWER
Answered 2021-Jun-15 at 17:13In your code, you aren't using the Listbox. So, I suggest to remove that part completely and do this.
QUESTION
I am building an app following the Rest Countries API challenge from frontendmentor (https://www.frontendmentor.io/challenges/rest-countries-api-with-color-theme-switcher-5cacc469fec04111f7b848ca). I have run into a problem. When clicking on the router link in countryDetail.js, the url changes but the component doesn't get re-rendered unless the page is refreshed.
CountryDetails.js
...ANSWER
Answered 2021-Jun-15 at 17:07The issue seems to be that you are already on the "/country/:name" path and are clicking to visit another country. The router correctly updates the URL in the address bar, but because CountryDetail is already mounted it neglects to recompute the item and allCountries state. This is because the useEffect hook only runs once when the component mounts.
The name param (match.params.name) is actually a dependency for the GET requests, it should be added to the useEffect hook's dependency array.
QUESTION
I wanted to get started with posh and oh-my-posh so I installed them according to this article. Microsoft docs. I got the theme but the edges didn't had that arrow(that coolness).
I then downloaded the windows terminal and edited the setting.json there with
...ANSWER
Answered 2021-Feb-19 at 17:57If I understand correctly, there are two parts to the question.
Changing the PowerShell Window FontTo do this, right-click your PowerShell window and head to "Properties"
There, you can choose the header "Font" and change your font to Cascadia Code PL".
This should fix the problem. If you still experience some weird characters, you might need to install a Nerd Font instead.
Changing the VS Code Terminal FontTo use the font in the VS Code Terminal, head to Settings.
Searching for "integrated terminal font family" should bring up the setting you need to edit. Here, add your font 'Cascadia Code PL' on the very front of the setting and save.
You should now be able to open a terminal and use the PL prompt.
QUESTION
I'm using create-react-app and have configured my project for eslint. Below is my .eslintrc file.
...ANSWER
Answered 2021-Jun-15 at 12:54You can do it by adding DISABLE_ESLINT_PLUGIN=true to the "build" in the "scripts" part in your package.json:
QUESTION
I am building an app following the Rest Countries API challenge from frontendmentor. I have run into a problem. When trying to find the border countries full name using the alpha3code, I get the error :
TypeError: Cannot read property 'name' of undefined.
ANSWER
Answered 2021-Jun-15 at 10:55This may not answering your question but have you tried console.log(response.data) before setItem(response.data) to check the data you get from axios.get? sometimes console.log can help
QUESTION
so I have a button to create/ append step div and each step has an add action button element.
Question: how do I append action in a specific step for example if I add new action in step 2 then it will only create a new action in step 2
Here is the link to what i did https://jsfiddle.net/noobnoob121212/306boevh/7/
so what i did to create new step is :
...ANSWER
Answered 2021-Jun-15 at 12:14Whenever actionmodal is open you can save the index() of div which has open that modal inside data-attribute . Then , when appendaction button is clicked get the data-attribute and then use $(".steplist .input-group:eq(" + row_no + ")").. to add new data inside your input-group div.
Demo Code :
QUESTION
I wanted to create a custom Alertdialog Layout with a dropdown list and a few other things. I'm using Kotlin and I'm pretty new to it Currently I'm stuck at the dropdown list as it doesn't show anything
Here is the Layout.xml:
...ANSWER
Answered 2021-Jun-15 at 12:10You're calling findViewById on your current Activity, which doesn't contain R.id.pizza_selection. Therefore I suspect you'll see
val pizzaDropdown = findViewById(R.id.pizzaSelection)
return null.
Try something like this:
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