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TypeError: ObjectId('') is not JSON serializable
...al example from json_util.
Unlike Flask's jsonify, "dumps" will return a string, so it cannot be used as a 1:1 replacement of Flask's jsonify.
But this question shows that we can serialize using json_util.dumps(), convert back to dict using json.loads() and finally call Flask's jsonify on it.
E...
Memoization in Haskell?
...ined over the range [0..].) It works searches the tree by treating n as a string of bits, and reading through the bits in reverse. If the bit is 1, it takes the right-hand branch. If the bit is 0, it takes the left-hand branch. It stops when it reaches the last bit (which must be a 1).
index' (...
What is the meaning of the prefix N in T-SQL statements and when should I use it?
...
It's declaring the string as nvarchar data type, rather than varchar
You may have seen Transact-SQL code that passes strings around using
an N prefix. This denotes that the subsequent string is in Unicode
(the N actually stands for Nati...
How to solve javax.net.ssl.SSLHandshakeException Error?
...public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
{
//No need to implement.
}
public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
{
//No n...
C-like structures in Python
...myStruct['field2'] = 'some other values'
And the values don't have to be strings. They can be pretty much any other object.
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deleting rows in numpy array
...tected. In this case, the short-circuiting should be a draw, but doing the extra not should make it slower in my opinion.
– Justin Peel
Oct 11 '10 at 2:28
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...
Django: Get list of model fields?
...s which (ultimately) inherits from models.Model . I want to get a list of all the fields defined for this model. For example, phone_number = CharField(max_length=20) . Basically, I want to retrieve anything that inherits from the Field class.
...
Change values while iterating
...to this:
package main
import "fmt"
type Attribute struct {
Key, Val string
}
type Node struct {
Attr []Attribute
}
func main() {
n := Node{
[]Attribute{
{"key", "value"},
{"href", "http://www.google.com"},
},
}
fmt.Println(n)
for ...
DefaultInlineConstraintResolver Error in WebAPI 2
...in a Route, you specified something like
[Route("SomeRoute/{someparameter:string}")]
"string" is not needed as it is the assumed type if nothing else is specified.
As the error indicates, the DefaultInlineConstraintResolver that Web API ships with does not have an inline constraint called string...
Calling parent class __init__ with multiple inheritance, what's the right way?
...ing super() leads to greater flexibility for subclasses.
In the direct call approach, C.__init__ can call both A.__init__ and B.__init__.
When using super(), the classes need to be designed for cooperative multiple inheritance where C calls super, which invokes A's code which will also call supe...