145
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47
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Asked on July 17, 2020 in Python.
Here’s how they do it in awscli :
def find_bucket_key(s3_path): """ This is a helper function that given an s3 path such that the path is of the form: bucket/key It will return the bucket and the key represented by the s3 path """ s3_components = s3_path.split('/') bucket = s3_components[0] s3_key = "" if len(s3_components) > 1: s3_key = '/'.join(s3_components[1:]) return bucket, s3_key def split_s3_bucket_key(s3_path): """Split s3 path into bucket and key prefix. This will also handle the s3:// prefix. :return: Tuple of ('bucketname', 'keyname') """ if s3_path.startswith('s3://'): s3_path = s3_path[5:] return find_bucket_key(s3_path)
Which you could just use with code like this
from awscli.customizations.s3.utils import split_s3_bucket_key import boto3 client = boto3.client('s3') bucket_name, key_name = split_s3_bucket_key( 's3://example-bucket-name/path/to/example.txt') response = client.get_object(Bucket=bucket_name, Key=key_name)
This doesn’t address the goal of interacting with an s3 key as a file like object but it’s a step in that direction.
- 392 views
- 6 answers
- 0 votes
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Asked on July 17, 2020 in XML.
Try to Dispose the FileStream object at the end of ReadXml and WriteXml methods.
- 343 views
- 3 answers
- 0 votes
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Asked on July 17, 2020 in XML.
The usual boilerplate is:
tree = etree.parse('pom.xml') root = tree.getroot()
and from there:
depend = root.xpath("//*[local-name()='dependency']")
etc. Try it and see if it works.
- 318 views
- 1 answers
- 0 votes
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Asked on July 16, 2020 in .NET.
bind the
IsVisible
property to a VM property<Button x:Name="Button_Round" IsVisible="{Binding ButtonVisible}" ... />
then in your VM (your VM must implement INotifyPropertyChanged)
private bool _ButtonVisible = true; public bool ButtonVisible { get { return _ButtonVisible; } set { _ButtonVisible = value; PropertyChanged("ButtonVisible"); } }
then whenever your receive the response from the server, you can set
ButtonVisible
to the appropriate value- 345 views
- 1 answers
- 0 votes
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Asked on July 16, 2020 in .NET.
You need to set the JsonSerializer options not to encode those strings.
JsonSerializerOptions jso = new JsonSerializerOptions(); jso.Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping;
Then you pass this options when you call your
Serialize
method.var s = JsonSerializer.Serialize(a, jso);
Full code:
JsonSerializerOptions jso = new JsonSerializerOptions(); jso.Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping; var a = new A { Name = "你好" }; var s = JsonSerializer.Serialize(a, jso); Console.WriteLine(s);
Result:
If you need to print the result in the console, you may need to install additional language. Please refer here.
- 417 views
- 2 answers
- 0 votes
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Asked on July 16, 2020 in .NET.
I’m not sure what you are trying to achieve, here is the code to get a line with 2 previous lines:
var lines = File.ReadAllLines("DeadByDaylightCopy.log"); for (int i = 0; i < lines.Length; i++) { var linesAnd2PreviousLines = lines[Math.Max(0, i - 2)..(i + 1)]; }
- 320 views
- 2 answers
- 0 votes
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Asked on July 16, 2020 in Mysql.
If your invoice_date is a string in format ‘%d/%m/%Y’ instead of cast you should use str_to_date
SELECT * FROM stockmanagement2.invoice_item WHERE str_to_date(invoice_date, '%d/%m/%Y') BETWEEN str_to_date('01/07/2019' , '%d/%m/%Y') AND str_to_date('31/07/2019' , '%d/%m/%Y')
- 283 views
- 1 answers
- 0 votes
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Asked on July 16, 2020 in Mysql.
I use Objective-C to slap the UI together.
But the hard guts of the code is still written in C++.That is the main purpose of Objective-C the UI interface and handling the events.
And it works great for that purpose.I still like C++ as the backend for the code though (but that’s mainly becuase I like C++) you could quite easily use Objective-C for the backend of the application as well.
- 0 views
- 11 answers
- 0 votes
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Asked on July 16, 2020 in Mysql.
Your question is a little unclear on what exactly you’d be looking for, as well the comp table only has one employee on it so it would always be EID 1 or Dee. Not sure if this is a mistake or now.
Besides that, I think there are a few different ways of doing this. How I would do it would be to join the tables where the EID is equal to each other, order the table by the salary in ascending order, and then limit to 1. This should give you one record of who has the highest compensation.
However, this does not take into account the dates and stuff. The question is a little unclear. If you wanted something like that, then you’d but using a subquery to calculate the salary * date-difference then doing something similar to above.
Hope this gets you pointed into a better direction! Good luck!
- 271 views
- 1 answers
- 0 votes
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Asked on July 16, 2020 in Java Script.
I guess it’s related with the filter settings, please check telerik examples here:
https://www.telerik.com/kendo-react-ui/components/dropdowns/combobox/filtering/
- 285 views
- 1 answers
- 0 votes