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What is Scala's yield?

... or from a in args select a.toUpperCase in Linq. Ruby's yield has a different effect. share | improve this answer | follow | ...
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Efficiently updating database using SQLAlchemy ORM

...d 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 if you say for c in session.que...
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Response.Redirect with POST instead of Get?

...ctively changing 307 redirect into the more common 302. So, as far as I know, the only way to implement something like this would be to use Javascript. There are two options I can think of off the top of my head: Create the form and have its action attribute point to the third-party server. Th...
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Resolving ambiguous overload on function pointer and std::function for a lambda using +

...ked up by an argument by Daniel Krügler, this unary + trick should be specified behaviour, i.e. you can rely on it (see discussion in the comments). Still, I'd recommend using an explicit cast to the function pointer type if you want to avoid the ambiguity: you don't need to ask on SO what is does...
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jQuery UI: Datepicker set year range dropdown to 100 years

....jqueryui.com/datepicker/#option-yearRange yearRange: '1950:2013', // specifying a hard coded year range or this way yearRange: "-100:+0", // last hundred years From the Docs Default: "c-10:c+10" The range of years displayed in the year drop-down: either relative to today's year ("-n...
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How do I scale a stubborn SVG embedded with the tag?

...tributes of the SVG tag and it seemed to work. Save the SVG and it should now scale as expected. I found this information here: https://blueprints.launchpad.net/inkscape/+spec/allow-browser-resizing share | ...
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Accessing a Dictionary.Keys Key through a numeric index

...t.Count -1); You should not depend on the order of keys in a Dictionary. If you need ordering, you should use an OrderedDictionary, as suggested in this answer. The other answers on this page are interesting as well. share...
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Create an index on a huge MySQL production table without table locking

...ating MySQL's Schema without downtime Thusfar, there's only one method I know of to update a MySql schema and not suffer an availability outage. Circular masters: Master A has your MySQL database running on it Bring Master B into service and have it replicate writes from Master A ( B is a slave ...
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How do I force Postgres to use a particular index?

...om_page_cost = 1; EXPLAIN <query>; # May use index scan now You can restore the default value with SET random_page_cost = DEFAULT; again. Background Index scans require non-sequential disk page fetches. Postgres uses random_page_cost to estimate the cost of such non-sequential...
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Batch file include external file for variables

...ead set input=1 set input2=2 set /p input=INPUT: set /p input2=INPUT2: Now, we need to write the variables to a file. (echo %input%)> settings.cdb (echo %input2%)>> settings.cdb pause I use .cdb as a short form for "Command Database". You can use any extension. The next section is to...