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Convert JSON string to dict using Python
...er function to perform a type check on the data being passed in to automatically choose the right function to call. I also do not like the vague nomenclature used. Here is what I wrote to combat this: def read_json(json_data): if (type(json_data) == str): return json.loads(json_data) ...
How do I associate a Vagrant project directory with an existing VirtualBox VM?
...llowing path:
cd .vagrant/machines/default/virtualbox
3) Create a file called id with the ID of your VM xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
4) Save the file and run vagrant up
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How to fire AJAX request Periodically?
... the page after every 5 seconds. But I want to do it using jQuery and AJAX call. Is it possible?
4 Answers
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Entity Framework 4 - AddObject vs Attach
... objects that do not exist in the database. The entity will get an automatically generated temporary EntityKey and its
EntityState will be set to Added. When SaveChanges is called, it will be clear to the EF that this entity needs to be inserted into the database.
ObjectContext.Attach and ObjectSe...
Difference between Key, Primary Key, Unique Key and Index in MySQL
... would use indexes to improve the speed of data retrieval. An index is typically created on columns used in JOIN, WHERE, and ORDER BY clauses.
Imagine you have a table called users and you want to search for all the users which have the last name 'Smith'. Without an index, the database would have ...
Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?
...PathForSelectedRow() contains the correct value when prepareFroSegue... is called: tableView(_:didSelectrowAtIndexPath:) isn't called until later.
– Nicolas Miari
Jun 7 '16 at 2:21
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Chrome Extension Message passing: response not sent
... will keep the message channel open to the other end until sendResponse is called).
So you just need to add return true; after the call to getUrls to indicate that you'll call the response function asynchronously.
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jquery if div id has children
... minor issue. don't mean to nitpick but children().length should be called instead of size() per jQuery docs here: api.jquery.com/size
– Brian Chavez
May 7 '11 at 5:06
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Django: Get list of model fields?
...or this model. For example, phone_number = CharField(max_length=20) . Basically, I want to retrieve anything that inherits from the Field class.
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Check if a dialog is displayed with Espresso
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For step 4 instead of clicking outside the dialog you can call "pressBack();" which dismisses the dialog. it's the equivalent of using the hardware back button.
– Ethan
Jul 14 '16 at 15:47
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