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Using System.Dynamic in Roslyn
... with the new version of Roslyn that was released yesterday to use dynamic and ExpandoObject but I am getting a compiler error which I am not sure how to fix. The error is:
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c# datatable insert column at position 0
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Just to improve Wael's answer and put it on a single line:
dt.Columns.Add("Better", typeof(Boolean)).SetOrdinal(0);
UPDATE: Note that this works when you don't need to do anything else with the DataColumn. Add() returns the column in question, SetOrdin...
Can you use hash navigation without affecting history?
...he hash value of a URL without leaving an entry in the browser's history and without reloading ? Or do the equivalent?
4...
How to run Maven from another directory (without cd to project dir)?
Supposing my maven project is located in /some/location/project and my current location is /another/location/ how can I run maven build without changing to project location cd /some/location/project ?
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Loop through an array of strings in Bash?
... # do something like: echo $databaseName
done
See Bash Loops for, while and until for details.
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How to pass the values from one activity to previous activity
...he Activity when a user clicks the button, you need to create a new Intent and include the entered text value in its extras bundle. To pass it back to the parent call setResult before calling finish to close the secondary Activity.
Intent resultIntent = new Intent();
resultIntent.putExtra(PUBLIC_ST...
Adding a cross-reference to a subheading or anchor in another page
...the scope of the question unclear. Is it about reStructuredText in general and Sphinx, or only about reStructuredText as used in Sphinx (and not reStructuredText in general)? I'm going to cover both since people using RST are likely to run into both cases at some point:
Sphinx
Besides the domain-s...
What is Full Text Search vs LIKE
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In general, there is a tradeoff between "precision" and "recall". High precision means that fewer irrelevant results are presented (no false positives), while high recall means that fewer relevant results are missing (no false negatives). Using the LIKE operator gives you 100%...
Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?
... compiler typically auto generates a default constructor, copy constructor and assignment operator.
3 Answers
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Check for array not empty: any?
...something or not. This includes things that evaluate to false, such as nil and false.
>> a = []
=> []
>> a.empty?
=> true
>> a = [nil, false]
=> [nil, false]
>> a.empty?
=> false
>> a = [nil]
=> [nil]
>> a.empty?
=> false
The method any? comes ...