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When should I use Lazy?
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You typically use it when you want to instantiate som>me m>thing the first tim>me m> its actually used. This delays the cost of creating it till if/when it's needed instead of always incurring the cost.
Usually this is preferable when the object may or may not be used and the cost of ...
How to search a specific value in all tables (PostgreSQL)?
...e, then using grep?
$ pg_dump --data-only --inserts -U postgres your-db-nam>me m> > a.tmp
$ grep United a.tmp
INSERT INTO countries VALUES ('US', 'United States');
INSERT INTO countries VALUES ('GB', 'United Kingdom');
The sam>me m> utility, pg_dump, can include column nam>me m>s in the output. Just change -...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
...y argue to use it for the PRIMARY KEY of the table. What I'd strongly recomm>me m>nd not to do is use the GUID column as the clustering key, which SQL Server does by default, unless you specifically tell it not to.
You really need to keep two issues apart:
the primary key is a logical construct - one ...
How to store a list in a column of a database table
So, per m>Me m>hrdad's answer to a related question , I get it that a "proper" database table column doesn't store a list. Rather, you should create another table that effectively holds the elem>me m>nts of said list and then link to it directly or through a junction table. However, the type of list I wa...
PHP: exceptions vs errors?
Maybe I'm missing it som>me m>where in the PHP manual, but what exactly is the difference between an error and an exception? The only difference that I can see is that errors and exceptions are handled differently. But what causes an exception and what causes an error?
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Ember.js or Backbone.js for Restful backend [closed]
...ations where the user will keep the application open for long periods of tim>me m>, perhaps all day, and interactions with the application's views or underlying data trigger deep changes in the view hierarchy. Ember is larger than Backbone, but thanks to Expires, Cache-Control this only matters on the th...
What is the advantage of GCC's __builtin_expect in if else statem>me m>nts?
I cam>me m> across a #define in which they use __builtin_expect .
6 Answers
6
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A definitive guide to API-breaking changes in .NET
... API changes do or do not break client applications. First, let's define som>me m> terms:
16 Answers
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What is the difference between statically typed and dynamically typed languages?
... new programming languages are dynamically typed but what does it actually m>me m>an when we say a language is dynamically typed vs. statically typed?
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What are enums and why are they useful?
Today I was browsing through som>me m> questions on this site and I found a m>me m>ntion of an enum being used in singleton pattern about purported thread safety benefits to such solution.
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