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Correct way to use StringBuilder in SQL
...for the overall expression. But it will use the default constructor, which means in the majority of cases, it will have to do a reallocation. It's easier to read, though. Note that this is not true of a series of concatenations. So for instance, this uses one StringBuilder:
return "prefix " + varia...
Count with IF condition in MySQL query
..._news_comments.id = 'approved', ccc_news_comments.id, 0)) ??? what will be meaning of using sum if you use ccc_news_comments.id
– user319198
Mar 21 '12 at 5:17
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Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
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What does this mean? FragmentManager.getBackStackEntryCount()/getBackStackEntryAt().getId()
– dannyroa
Aug 10 '12 at 2:14
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How does autowiring work in Spring?
...he application context.
What is "living" in the application context? This means that the context instantiates the objects, not you. I.e. - you never make new UserServiceImpl() - the container finds each injection point and sets an instance there.
In your controllers, you just have the following:
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How to extract the decision rules from scikit-learn decision-tree?
... Can you tell , what exactly [[ 1. 0.]] in the return statement means in the above output . I am not a Python guy , but working on same sort of thing. So it will be good for me if you please prove some details so that it will be easier for me.
– Subhradip Bose
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INNER JOIN vs LEFT JOIN performance in SQL Server
... version is able to replace one of the clustered index scans with a seek - meaning that this will literally be an order of magnitude faster with a large number of rows.
So the conclusion is more or less what I mentioned several paragraphs above; this is almost certainly an indexing or index coverag...
Pull all commits from a branch, push specified commits to another
...onlan please explain how the merging functionality is braked. What does it mean?
– Narek
Sep 19 '13 at 12:46
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What is token-based authentication?
I want to understand what token-based authentication means. I searched the internet but couldn't find anything understandable.
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Remove ALL white spaces from text
...o tell replace() to repeat the regex:
.replace(/ /g,'')
The g character means to repeat the search through the entire string. Read about this, and other RegEx modifiers available in JavaScript here.
If you want to match all whitespace, and not just the literal space character, use \s instead:
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How does database indexing work? [closed]
...,778 block accesses required by the non-indexed table." doesn't the author mean 1,000,000 block accesses? 277,778 is the number of blocks required by the index itself. There seems to be a couple of other inaccuracies too :(
– jcm
Aug 24 '14 at 4:02
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