大约有 6,887 项符合查询结果(耗时:0.0169秒) [XML]

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Convert SQLITE SQL dump file to POSTGRESQL

...nto postgresql:///testdb with include drop, create tables, create indexes, reset sequences set work_mem to '16MB', maintenance_work_mem to '512 MB'; like the docs state. I then created a testdb with createdb: createdb testdb I ran the pgloader command like this: pgloader comman...
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Best practices for storing postal addresses in a database (RDBMS)?

...rics. You might save a few bytes here and there, and maybe get a faster index, but what do you when US postal, or whatever other country you are dealing with, decides the introduce alphas into the codes? The cost of disk space is going to be a lot cheaper than the cost of fixing it later on.....
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Practical uses for AtomicInteger

...ith standard ints: private volatile int counter; public int getNextUniqueIndex() { return counter++; // Not atomic, multiple threads could get the same result } With AtomicInteger: private AtomicInteger counter; public int getNextUniqueIndex() { return counter.getAndIncrement(); } Th...
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Getting the first character of a string with $str[0]

...n message has been removed in revision 304518 - The curly-brackets-string-index-accessor-syntax does not emit any deprecation notice, although the original notice have been on and off for PHP 5.x, it does not in the current version, thrus we should not label it as deprecated. Related to bug #522...
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When to use a View instead of a Table?

...rlying SELECT could change significantly) Increase performance (Sql Server Indexed Views) Offer specific query optimization with the view that might be difficult to glean otherwise And you should not design tables to match views. Your base model should concern itself with efficient storage and ret...
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Outputting data from unit test in python

... Nose (nose.readthedocs.org/en/latest/index.html) is another framework that provides 'start a debugger session' options. I run it with '-sx --pdb --pdb-failures', which doesn't eat output, stops after the first failure, and drops into pdb on exceptions and test ...
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What is the optimal length for user password salt? [closed]

... Or even better owasp.org/index.php/Password_Storage_Cheat_Sheet – Boris Treukhov May 15 '14 at 20:35 add a comment ...
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Disable mouse scroll wheel zoom on embedded Google Maps

... This is a great solution. In my case, I had to specify a z-index in order for it to overlay correctly, though. – RCNeil Apr 17 '14 at 14:23 1 ...
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Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?

...d from years of experience in C that I don't get buffer overruns (or array index out of bounds) if I keep use of it simple. But I've discovered that I do get buffer overruns if I fall into the "excessively tricky" practice of doing other things in the same statement. So, for my own rules, the use o...
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How to $http Synchronous call with AngularJS

... <tr ng-repeat="direction in directions"> <td>{{$index}}</td> <td>{{direction.description}}</td> </tr> </tbody> </table> </div> 'use strict'; var app = angular.module('myApp', []); app.fa...