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how to make a jquery “$.post” request synchronous [duplicate]
...n googling this and avoiding this error in my bug fix list for a long time now, but I’ve finally reached the end of the list, the last of which I have to make a function return true/false to state whether the validation has succeeded or not.
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How to merge multiple lists into one list in python? [duplicate]
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a = ['it']
b = ['was']
c = ['annoying']
a.extend(b)
a.extend(c)
# a now equals ['it', 'was', 'annoying']
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Augmented Reality SDK with OpenCV [closed]
...fiducial approach is the simplest, but it is not quite up-to-date. I think now one should point to textured markers. Thanks. The example is very interesting as it is well explained, though.
– Jav_Rock
Sep 5 '12 at 16:07
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Docker, mount volumes as readonly
...n the host.
2018 Edit
According to the Use volumes documentation, there is now another way to mount volumes by using the --mount switch. Here is how to utilize that with read-only:
$ docker run --mount source=volume-name,destination=/path/in/container,readonly my/image
docker-compose
Here is an exa...
Transactions in REST?
...ou create a transaction as an object. This could contain all the data you know already, and put the transaction in a pending state.
POST /transfer/txn
{"source":"john's account", "destination":"bob's account", "amount":10}
{"id":"/transfer/txn/12345", "state":"pending", "source":...}
Once you ha...
Difference between method and function in Scala
...l):
def apply(v1: T1, v2: T2): R
And that tell us all that there is to know about it. A function has an apply method which receives N parameters of types T1, T2, ..., TN, and returns something of type R. It is contra-variant on the parameters it receives, and co-variant on the result.
That varia...
What are the benefits of Java's types erasure?
...T. The fact that T is an abstract, unbounded type parameter means that we know nothing about this type, therefore are prevented from doing anything special for special cases of T.
e.g. say I have a List xs = asList("3"). I add an element: xs.add("q"). I end up with ["3","q"].
Since this is paramet...
What is the difference between a schema and a table and a database?
...grant rights on the schema.
In 2000 a schema was equivalent to a user. Now it has broken free and is quite useful. You could throw all your user procs in a certain schema and your admin procs in another. Grant EXECUTE to the appropriate user/role and you're through with granting EXECUTE on spec...
Why is IoC / DI not common in Python?
...Python, I simply import from a different location using the same name. But now I am thinking if it's also possible the other way round by defining a MyClassInstances class to each MyClass in Java, which contains only static, fully initialized instances. That would be wired :D
–...
Java: when to use static methods
...pgToKpl(double mpg)
...which would be static, because one might want to know what 35mpg converts to, even if nobody has ever built a Car. But this method (which sets the efficiency of one particular Car):
void setMileage(double mpg)
...can't be static since it's inconceivable to call the metho...