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Shared-memory objects in multiprocessing
... wrap it with some kind of synchronization or locking. multiprocessing provides two methods of doing this: one using shared memory (suitable for simple values, arrays, or ctypes) or a Manager proxy, where one process holds the memory and a manager arbitrates access to it from other processes (even o...
How to get a list of all files that changed between two Git commits?
...w) with the list of files included in, use:
git show --name-only [commit-id_A]^..[commit-id_B]
Where [commit-id_A] is the initial commit and [commit-id_B] is the last commit than you want to show.
Special attention with ^ symbol. If you don't put that, the commit-id_A information will not deplo...
Change One Cell's Data in mysql
...
My answer is repeating what others have said before, but I thought I'd add an example, using MySQL, only because the previous answers were a little bit cryptic to me.
The general form of the command you need to use to update a single row's column:
UPDATE my_table S...
How to center horizontally div inside parent div
How do I center a div horizontally inside its parent div with CSS ?
5 Answers
5
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How to sort an array of objects with jquery or javascript [duplicate]
...rs who use IE 7/8/9. We haven't had any issues with this code. Can you provide more information about your code?
– Ketan
Mar 6 '13 at 17:00
...
How do I filter ForeignKey choices in a Django ModelForm?
...es are a model QuerySet. See the reference for ModelChoiceField.
So, provide a QuerySet to the field's queryset 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)
...
Mongoose: Get full list of users
...
Well, if you really want to return a mapping from _id to user, you could always do:
server.get('/usersList', function(req, res) {
User.find({}, function(err, users) {
var userMap = {};
users.forEach(function(user) {
userMap[user._id] = user;
});
res...
Button in a column, getting the row from which it came on the Click event handler
I've set the itemsource of my WPF Datagrid to a List of Objects returned from my DAL. I've also added an extra column which contains a button, the xaml is below.
...
REST APIs: custom HTTP headers vs URL parameters
...aves true metadata about the request for custom headers.
HTTP has a very wide selection of headers that cover most everything you'll need. Where I've seen custom headers come up is in a system to system request operating on behalf of a user. The proxy system will validate the user and add "X-User...
Why dict.get(key) instead of dict[key]?
...
It allows you to provide a default value if the key is missing:
dictionary.get("bogus", default_value)
returns default_value (whatever you choose it to be), whereas
dictionary["bogus"]
would raise a KeyError.
If omitted, default_value is...