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“open/close” SqlConnection or keep open?
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Use Method (a), every time. When you start scaling your application, the logic that deals with the state will become a real pain if you do not.
Connection pooling does what it says on the tin. Just think of what happens when the application scale...
Predicate in Java
I am going through the code which uses Predicate in Java. I have never used Predicate . Can someone guide me to any tutorial or conceptual explanation of Predicate and its implementation in Java?
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Why are C# interface methods not declared abstract or virtual?
C# methods in interfaces are declared without using the virtual keyword, and overridden in the derived class without using the override keyword.
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mongoDB/mongoose: unique if not null
I was wondering if there is way to force a unique collection entry but only if entry is not null .
e
Sample schema:
4 Answ...
What is a Manifest in Scala and when do you need it?
Since Scala 2.7.2 there is something called Manifest which is a workaround for Java's type erasure. But how does Manifest work exactly and why / when do you need to use it?
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What is declarative programming? [closed]
... add information (more precisely, constraints are information). If we need time-varying declarations, it is typical to model this with explicit temporal semantics - e.g. from "the ball is flat" to "the ball is flat at time T". If we have two contradictory declarations, we have an inconsistent declar...
What do the python file extensions, .pyc .pyd .pyo stand for?
...ipt is never written to a ‘.pyc’ or ‘.pyo’ file. Thus, the startup time of a script may be reduced by moving most of its code to a module and having a small bootstrap script that imports that module. It is also possible to name a ‘.pyc’ or ‘.pyo’ file directly on the command line.
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facebook: permanent Page Access Token?
... the text "This does not let the app post to Facebook" appears at the same time below. So a new step should be inserted between step 1.5 and 1.6 above, reading "Do a lot of tedious sh*t with your app, then submit it for review, then pray and wait." :-( Anyone know a way around this for a pure test a...
What is a “symbol” in Julia?
...st be immutable. Interning strings makes some string processing tasks more time- or space-efficient at the cost of requiring more time when the string is created or interned. en.wikipedia.org/wiki/String_interning
– xiaodai
Oct 3 '17 at 5:23
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Git submodule push
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The --recurse-submodules command line parameter has existed for some
time but it has no config file equivalent.
Following the style of the corresponding parameter for git fetch, let's
invent push.recurseSubmodules to provide a default for this parameter.
This also requires the additio...