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What are the disadvantages of using persistent connection in PDO

...off. The connection is held open at the process manager level (Apache for mod_php, the current FastCGI process if you're using FastCGI, etc), not at the PHP level, and PHP doesn't tell the parent process to let the connection die when the script terminates abnormally. If the dead script locked tab...
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What is the difference between partitioning and bucketing a table in Hive ?

...ets, it is split into 3 files each for each product_id. It internally uses modulo operator to determine in which bucket each sales_id should be stored. For example, for the product_id='P1', the sales_id=1 will be stored in 000001_0 file (ie, 1%3=1), sales_id=2 will be stored in 000002_0 file (ie, 2%...
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How Drupal works? [closed]

...ter system (MenuAPI) is used to match the requested path to a given plugin module. That plugin module is responsible for building the "primary content" of the page. Once the primary page content is built, index.php calls theme('page', $content), which hands off the content to Drupal's theming/skinni...
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Greedy vs. Reluctant vs. Possessive Quantifiers

...-- just grab the entire string at once. – treat your mods well Jan 31 '17 at 14:22 @phyzome I think it is ok now? ...
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Java 8: performance of Streams vs Collections

...JMH. Proper benchmarks: @OutputTimeUnit(TimeUnit.NANOSECONDS) @BenchmarkMode(Mode.AverageTime) @OperationsPerInvocation(StreamVsVanilla.N) public class StreamVsVanilla { public static final int N = 10000; static List<Integer> sourceList = new ArrayList<>(); static { ...
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Equation (expression) parser with precedence?

...>>= return . (B Div) <|> sym "%" >>= return . (B Mod) <|> return . (B Mul) addop = sym "+" >>= return . (B Add) <|> sym "-" >>= return . (B Sub) scalar = number >>= return . toScalar ident = literal >>...
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Why does Unicorn need to be deployed together with Nginx?

...ocess the only static contents, combinely with the passenger or unicorn or mod_php ? – loganathan Jan 5 '12 at 9:20 ...
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Saving an Object (Data persistence)

... You could use the pickle module in the standard library. Here's an elementary application of it to your example: import pickle class Company(object): def __init__(self, name, value): self.name = name self.value = value with ope...
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Difference between Big-O and Little-O Notation

...rms of the superior limit instead of the normal limit. For example, 3 + (n mod 2) oscillates between 3 and 4 forever. It's in O(1) despite not having a normal limit, because it still has a lim sup: 4.) I recommend memorizing how the Big-O notation converts to asymptotic comparisons. The comparison...
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ServiceStack vs ASP.Net Web API [closed]

...ple and elegant core - with most of its features naturally binding to your models, not your controllers - which is what MVC, WebApi does (as well as every other Web Service Framework Microsoft has produced). Adopting a message-based design offers a superior approach for remote services, in that the...