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Add single element to array in numpy
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append() creates a new array which can be the old array with the appended element.
I think it's more normal to use the proper method for adding an element:
a = numpy.append(a, a[0])
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Python: List vs Dict for look up table
...d
Lookups in lists are O(n), lookups in dictionaries are amortized O(1), with regard to the number of items in the data structure. If you don't need to associate values, use sets.
Memory
Both dictionaries and sets use hashing and they use much more memory than only for object storage. According t...
Find merge commit which include a specific commit
...ranch feature is still available.
In that case h is the last result of:
git log master ^feature --ancestry-path
If the branch feature is not available anymore, you can show the merge commits in the history line between c and master:
git log <SHA-1_for_c>..master --ancestry-path --merges...
How to find out element position in slice?
How does one determine the position of an element present in slice?
6 Answers
6
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How to auto-reload files in Node.js?
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A good, up to date alternative to supervisor is nodemon:
Monitor for any changes in your node.js application and automatically restart the server - perfect for development
To use nodemon:
$ npm install nodemon -g
$ nodemon app.js
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ObjectiveC Parse Integer from String
...to extract a string (which contains an integer) from an array and then use it as an int in a function. I'm trying to convert it to a int using intValue.
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Popstate on page's load in Chrome
...d use history.pushState() in order to update the browser's location bar without page reload. Then, of course, I use window.popstate in order to restore previous state when back-button is clicked.
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How do I filter ForeignKey choices in a Django ModelForm?
...yset attribute. Depends on how your form is built. If you build an explicit form, you'll have fields named directly.
form.rate.queryset = Rate.objects.filter(company_id=the_company.id)
If you take the default ModelForm object, form.fields["rate"].queryset = ...
This is done explicitly in the ...
Height of status bar in Android [duplicate]
What's the height of the status bar in Android? Is it always the same?
23 Answers
23
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Do I have to Close() a SQLConnection before it gets disposed?
...ave a using block, the Dispose method of the SQLCommand will be called and it will close the connection:
// System.Data.SqlClient.SqlConnection.Dispose disassemble
protected override void Dispose(bool disposing)
{
if (disposing)
{
this._userConnectionOptions = null;
this._po...