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Fastest way to count exact number of rows in a very large table?
..., but it's slow. You can either have exact & slow, or rough and quick. What you do will depend on what's more important for the purpose you need the count for. NO LOCK might include or indeed exclude rows that are mid-transaction or moving pages for whatever reason.
– Davos...
Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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ng-app vs. data-ng-app, what is the difference?
...r answer on that page seems to think x is for XHTML, but I'm not sure. See what you can make of that after reading it all. HTML5 spec also says browser/vendor use: w3.org/html/wg/drafts/html/master/single-page.html
– redfox05
Nov 17 '15 at 14:32
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How do I print the type of a variable in Rust?
...float}`
Or call an invalid method:
let mut my_number = 32.90;
my_number.what_is_this();
error[E0599]: no method named `what_is_this` found for type `{float}` in the current scope
--> src/main.rs:3:15
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3 | my_number.what_is_this();
| ^^^^^^^^^^^^
Or access an invalid...
What is the best way to paginate results in SQL Server
What is the best way (performance wise) to paginate results in SQL Server 2000, 2005, 2008, 2012 if you also want to get the total number of results (before paginating)?
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What are some alternatives to ReSharper? [closed]
...ntegration with them. 1
Many of the new Visual Studio 2010 features. See what's been added vs. what you need, it could be that the core install takes care of what you are interested in now.
Visual Assist X, More than 50 features make Visual Assist X an incredible productivity tool. Pick a categor...
Convert ArrayList to String[] array [duplicate]
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To provide an explanation as to what is going on here, the JVM doesn't know how to blindly downcast Object[] (the result of toArray()) to String[]. To let it know what your desired object type is, you can pass a typed array into toArray(). The typed array c...
What are the best use cases for Akka framework [closed]
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What is the benefit of this approach in comparison to using a messaging backend (e.g. ActiveMQ) for message passing in your opinion?
– magiconair
Sep 23 '12 at 5:26
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git: How to diff changed files versus previous versions after a pull?
When I run "git pull" I often want to know what changed between the last version of a file and the new one. Say I want to know what someone else committed to a particular file.
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Check if a Python list item contains a string inside another string
...f-456', 'ghi-789', 'abc-456']
if any("abc" in s for s in some_list):
# whatever
If you really want to get all the items containing abc, use
matching = [s for s in some_list if "abc" in s]
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