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Efficiently updating database using SQLAlchemy ORM

...ngs in mind when using the ORM and plain SQL in the same transaction. Basically, from one side, ORM data modifications will only hit the database when you flush the changes from your session. From the other side, SQL data manipulation statements don't affect the objects that are in your session. So...
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Catch a thread's exception in the caller thread in Python

I'm very new to Python and multithreaded programming in general. Basically, I have a script that will copy files to another location. I would like this to be placed in another thread so I can output .... to indicate that the script is still running. ...
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Wrap a delegate in an IEqualityComparer

...fying. But I still don't understand your hashing policy of t => 0. If all objects always hash to the same thing (zero), then isn't that even more broken than using obj.GetHashCode, per @Dan Tao's point? Why not always force the caller to provide a good hash function? – Jo...
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How to parse/read a YAML file into a Python object? [duplicate]

...ame: Node 2 branch2-1: name: Node 2-1 And you've installed PyYAML like this: pip install PyYAML And the Python code looks like this: import yaml with open('tree.yaml') as f: # use safe_load instead load dataMap = yaml.safe_load(f) The variable dataMap now contains...
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mysql -> insert into tbl (select from another table) and some default values [duplicate]

... If you want to insert all the columns then insert into def select * from abc; here the number of columns in def should be equal to abc. if you want to insert the subsets of columns then insert into def (col1,col2, col3 ) select scol1,scol2,...
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How to read a file into a variable in shell?

... Ok but it's bash, not sh; it may not fit all cases. – moala Apr 15 '13 at 11:25 18 ...
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What is the best way to stop people hacking the PHP-based highscore table of a Flash game

...e key encryptions and high score postings throughout the binary. This is all mostly a waste of time. It goes without saying, SSL isn't going to help you either; SSL can't protect you when one of the two SSL endpoints is evil. Here are some things that can actually reduce high score fraud: Requi...
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Can “using” with more than one resource cause a resource leak?

... No. The compiler will generate a separate finally block for each variable. The spec (§8.13) says: When a resource-acquisition takes the form of a local-variable-declaration, it is possible to acquire multiple resources of a given type. A using statement of the...
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How to detect if a script is being sourced

I have a script where I do not want it to call exit if it's being sourced. 17 Answers ...
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How to remove an item from an array in AngularJS scope?

... Your issue is not really with Angular, but with Array methods. The proper way to remove a particularly item from an array is with Array.splice. Also, when using ng-repeat, you have access to the special $index property, which is the current inde...