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count(*) vs count(column-name) - which is more correct? [duplicate]
...e number of records where column_name is not null.
Therefore COUNT(*) is what you should use. If you're using MyISAM and there is no WHERE clause, then the optimiser doesn't even have to look at the table, since the number of rows is already cached.
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How to produce a range with step n in bash? (generate a sequence of numbers with increments)
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my understanding is that seq is a part of coreutils. what is non-standard about it? arguments? thanks for your help.
– SilentGhost
Jun 8 '09 at 18:14
4
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Libraries not found when using CocoaPods with iOS logic tests
...nd
target 'Sail-iOS' do
shared_pods
end
Pre CocoaPods 1.0 answer
What you want to use is link_with from your Podfile. Something like:
link_with 'MainTarget', 'MainTargetTests'
Then run pod install again.
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Is there a WebSocket client implemented for Python? [closed]
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It is probably good to explain what the code is doing if you are going to introduce a new API.
– user650261
Nov 19 '15 at 0:26
1
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Dealing with “Xerces hell” in Java/Maven?
...nd all dependencies have resolved fine - even proper xml-apis-1.4.01!
And what's most important (and what wasn't obvious in the past) - the JAR in Maven Central is the same JAR as in the official Xerces-J-bin.2.11.0.zip distribution.
I couldn't however find xml-schema-1.1-beta version - it can't b...
What is a Python equivalent of PHP's var_dump()? [duplicate]
...uently find it useful to simply stick a var_dump() in my code to show me what a variable is, what its value is, and the same for anything that it contains.
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what is the difference between ajax and jquery and which one is better? [closed]
I am confused about using ajax or jquery so I want to know what the differences are and which one is better such as performance and complexity .
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What does “rc” mean in dot files
...hich I believe can be expanded to "run commands". In fact, this is exactly what the file contains, commands that bash should run.
Quoted from What does “rc” in .bashrc stand for?
I learnt something new! :)
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Why do I need 'b' to encode a string with Base64?
...a string. A string is a sequence of Unicode characters. base64 has no idea what to do with Unicode data, it's not 8-bit. It's not really any bits, in fact. :-)
In your second example:
>>> encoded = base64.b64encode('data to be encoded')
All the characters fit neatly into the ASCII chara...
How can I run a directive after the dom has finished rendering?
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Can you elaborate why it "may fail in some cases"? What cases do you mean?
– rryter
Feb 14 '14 at 15:45
6
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