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Flattening a shallow list in Python [duplicate]

...be the best way to flatten a shallow list like this, balancing performance and readability? 23 Answers ...
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How to create a private class method?

... disgusting it is definitely not. It makes perfect sense once you understand Ruby's object model and the corresponding method lookup flow, especially when taking into consideration that private is NOT an access/visibility modifier, but actually a method call (with the class as its recipient) as di...
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Proper use of 'yield return'

...ld keyword is one of those keywords in C# that continues to mystify me, and I've never been confident that I'm using it correctly. ...
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Worst security hole you've seen? [closed]

...opping cart. The software properly calculated the total cost as .1 * cost, and the human packing the order simply glossed over the odd "." in front of the quantity to pack :) share ...
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Default string initialization: NULL or Empty? [closed]

... strings to NULL, with the thinking that NULL means the absence of a value and "" or String.Empty is a valid value. I have seen more examples lately of code where String.Empty is considered the default value or represents no value. This strikes me as odd, with the newly added nullable types in c# ...
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Row count with PDO

...doing an extra database query. I assume he has already done a select query and now wants to know how many rows were returned. – nickf May 19 '09 at 15:17 1 ...
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Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path

Edit :- Tried to format the question and accepted answer in more presentable way at mine Blog 22 Answers ...
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How to find largest objects in a SQL Server database?

...est objects in a SQL Server database? First, by determining which tables (and related indices) are the largest and then determining which rows in a particular table are largest (we're storing binary data in BLOBs)? ...
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Creating a new directory in C

... directory; if that directory does not exist then it creates the directory and a log file inside of it, but if the directory already exists, then it just creates a new log file in that folder. ...
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Check for column name in a SqlDataReader object

...ns for control logic like in some other answers is considered bad practice and has performance costs. It also sends false positives to the profiler of # exceptions thrown and god help anyone setting their debugger to break on exceptions thrown. GetSchemaTable() is also another suggestion in many an...