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Common use-cases for pickle in Python
... myStuff = pickle.load(f)
except:
myStuff = defaultdict(dict)
Now I don't have to build myStuff from scratch all over again, and I can just pick(le) up from where I left off.
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Why does .NET foreach loop throw NullRefException when collection is null?
...I think of it, returning null for a collection is an error. The way it is now, the runtime gives you a meaningful exception in this case, but it's easy to work around (ie: above) if you don't like this behavior. If the compiler hid this from you, you'd lose the error checking at runtime, but there...
Functional style of Java 8's Optional.ifPresent and if-not-Present?
...implementing consumer for better usage with other components.
by the way now its name is more descriptive it is actually Consumer>
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align text center with android
I know it sounds easy. I need to put a text in center, but when the text is too long it needs to go below, but still align in the center of my xml.
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How to identify all stored procedures referring a particular table
... for testing purpose and there are few sp's which are refreing this table. Now I have have to drop this table as well as identify all sp's which are referring this table. I am facing difficulty to find list of all sp's. Please suggest some query by assuming that the table name is 'x' and database is...
What is the fastest or most elegant way to compute a set difference using Javascript arrays?
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if don't know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, ...
Creating a copy of a database in PostgreSQL [closed]
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I know this is an old Q/A, but I feel it needs clarification: When @synecdoche says that originaldb must be idle, that means no write possibility at all. "Copying" a database in this fashion does not lock originaldb. PostgreSQL ...
How do you see the entire command history in interactive Python?
...rtup script (a script that's pointed to by env. var $PYTHONSTARTUP). From now on, I can simply type history() in any interpreter session ;-)
– sxc731
Feb 19 '16 at 9:09
2
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Is a GUID unique 100% of the time?
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If you're like me, then you'll want to know that 2^128 written out is approximately: 34,028,236,692,093,846,346,337,460,743,177,000,000. Statistically, if you calculated 1000 GUIDs every second, it would still take trillions of years to get a duplicate.
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How can I get the application's path in a .NET console application?
...hey need to be. Especially when we already have the information available. Now, if you are running a console application in such a way as to trick GetCommandLineArgs then you are already jumping through hoops and you would probably need to ask yourself if a console app is the right way to go.
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