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SQLAlchemy: Creating vs. Reusing a Session
...nging around in that Session, when you access them you'll get a single-row SELECT for each one of them as they each individually refresh their state in terms of the new transaction.
– zzzeek
Sep 27 '15 at 18:16
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how to provide a swap function for my class?
...declared in the same namespace as the type for which they are provided get selected through argument-dependent lookup over this generic version.
But note that directly using the std::swap function for a user-defined class calls the generic version of std::swap instead of the user-defined swap:
my...
How do I Sort a Multidimensional Array in PHP [duplicate]
...'s associative if you want: this code takes care of sorting items, but you select the actual sort function (usort or uasort).
Finally, it does not use array_multisort: while array_multisort is convenient, it depends on creating a projection of all your input data before sorting. This consumes time a...
Display open transactions in MySQL
... the current transaction list in InnoDB with the query below if you want.
SELECT * FROM information_schema.innodb_trx\G
From the document:
The INNODB_TRX table contains information about every transaction (excluding read-only transactions) currently executing inside InnoDB, including whether t...
JSF backing bean structure (best practices)
...VC design pattern. The typical use case is supplying an ArrayList to JSF h:selectOneMenu drop-down lists that appear in more than one JSF view. If the data in the dropdown lists is particular to the user, then the bean would be kept in session scope. However, if the data applies to all users (such a...
Is < faster than
...ughput
Jcc N/A 0.5
with the following footnote on Jcc:
7) Selection of conditional jump instructions should be based on the recommendation of section Section 3.4.1, “Branch Prediction Optimization,” to improve the predictability of branches. When branches are predicted successf...
Why use argparse rather than optparse?
... defining arguments. (My source recommends: Why Click)
python-inquirer For selection focused tools and based on Inquirer.js (repo)
If you need a more in-depth comparison please read this and you may end up using docopt or click. Thanks to Kyle Purdon!
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How to link godaddy domain with AWS Elastic Beanstalk environment?
...s).
Now you can link you domain with your Elastic Beanstalk site. To do so select/create proper A record type in Route 53 and set Alias for it:
Hope it helps.
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How do you effectively model inheritance in a database?
...etimes needed, when you want to load a list of all records (without doing select on each and every child table). One way to handle this, is to have one column representing the type of the child class (similar to the rowType field in the TPH), so mixing the TPT and TPH somehow.
Say we want to des...
Storyboard - refer to ViewController in AppDelegate
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If you use XCode 5 you should do it in a different way.
Select your UIViewController in UIStoryboard
Go to the Identity Inspector on the right top pane
Check the Use Storyboard ID checkbox
Write a unique id to the Storyboard ID field
Then write your code.
// Override point for ...