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How Do I Hide wpf datagrid row selector

I'm using the WPF DataGrid control to show some details and a select button, and I don't need the gray selector column down the left-hand side. It's also ruining the beauty of my design. ...
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Namespace for [DataContract]

I can't find the namespace to use for [DataContract] and [DataMember] elements. According to what I've found, it seems that adding the following should be enough, but in my case it is not. ...
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The performance impact of using instanceof in Java

I am working on an application and one design approach involves extremely heavy use of the instanceof operator. While I know that OO design generally tries to avoid using instanceof , that is a different story and this question is purely related to performance. I was wondering if there is any per...
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Change how fast “title” attribute's tooltip appears

...a browser dependent fashion. For example I remember differences between IE and FF when using \r\n inside it. Mozilla's docs explain the limits and functionality well. If you want customization you may take a look at third party plugins such as qTip2 which mimic it using divs and stuff and provide...
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Parallel.ForEach() vs. foreach(IEnumerable.AsParallel())

...o something quite different. The first one takes the anonymous delegate, and runs multiple threads on this code in parallel for all the different items. The second one not very useful in this scenario. In a nutshell it is intended to do a query on multiple threads, and combine the result, and giv...
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Run task only if host does not belong to a group

... Here's another way to do this: - name: my command command: echo stuff when: "'groupname' not in group_names" group_names is a magic variable as documented here: https://docs.ansible.com/ansible/latest/user_guide/playbooks_variables.html#accessing-information-about-...
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How to put individual tags for a scatter plot

I am trying to do a scatter plot in matplotlib and I couldn't find a way to add tags to the points. For example: 1 Answer ...
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Store print_r result into a variable as a string or text

... displayed, To save the data , so a simple thing, just declare a variable and assign the data to it.. for example you are printing some array like this.. print_r(myArray); to save this, you just have to add an option , set Return to TRUE and assign it to a variable $myVariable=print_r(myArray...
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Importing a CSV file into a sqlite3 database table using Python

I have a CSV file and I want to bulk-import this file into my sqlite3 database using Python. the command is ".import .....". but it seems that it cannot work like this. Can anyone give me an example of how to do it in sqlite3? I am using windows just in case. Thanks ...
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Transparent background with three.js

... postfix: "", imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....