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ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
I have created tables in MySQL Workbench as shown below :
21 Answers
21
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Changing route doesn't scroll to top in the new page
... $window.scrollTop(0,0)works better for me than autoscroll. In my case I have views that enter and leave with transitions.
– IsidroGH
Dec 21 '14 at 15:32
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Polymorphism with gson
...s is a bit late but I had to do exactly the same thing today. So, based on my research and when using gson-2.0 you really don't want to use the registerTypeHierarchyAdapter method, but rather the more mundane registerTypeAdapter. And you certainly don't need to do instanceofs or write adapters for t...
Optimal number of threads per core
...larger chunk of time share compared to competing threads. It would be nice my application could detect differences in performance and automagically tune itself to the optimal number of threads.
– Juliet
Nov 12 '09 at 15:56
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How does the @property decorator work in Python?
... of how @property can be implemented:
class Thing:
def __init__(self, my_word):
self._word = my_word
@property
def word(self):
return self._word
>>> print( Thing('ok').word )
'ok'
Otherwise word remains a method instead of a property.
class Thing:
def _...
Switch statement fall-through…should it be allowed? [closed]
...switch statement fall-through. Actually, I can't remember it ever entering my consciousness as a possible way to do things as it was drilled into my head early on that it was nothing more than a bug in the switch statement. However, today I ran across some code that uses it by design, which got me i...
Deserializing JSON data to C# using JSON.NET
...ng the generic DeserializeObject method?
JsonConvert.DeserializeObject<MyAccount>(myjsondata);
Any missing fields in the JSON data should simply be left NULL.
UPDATE:
If the JSON string is an array, try this:
var jarray = JsonConvert.DeserializeObject<List<MyAccount>>(myjsond...
Can you have a within a ?
Here is the story: I'm using SWFObject to insert a Flash object into my page. The embedding eats my span . So, I lose all my CSS for it. I was thinking of moving all of the CSS to the parent so I don't lose my CSS styles when the Flash appears.
...
How to launch Safari and open URL from iOS app
...f he stops by a particular page then can I get the current webpage link in my code?
– Varun Jain
Jun 1 '16 at 7:33
3
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How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...e) is not a complicated piece of code. The basic way it work is covered in my DroidCon slides. What I did not cover is the basic GC loop - at the point where the collector has a list of Objects to finalize (and destroy). The loop logic at the base can be simplified like this:
take starting_timesta...