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How do I see the last 10 commits in reverse-chronological order with SVN?
...mostly interested in showing the ALL latest commits without first updating my woking copy, so I mostly compare my log to HEAD falling:
svn log -l 10 -r HEAD:1
It makes a huge difference to me.
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Detecting programming language from a snippet
... find the code so I made a new one. It's a bit simplistic but it works for my tests. Currently if you feed it much more Python code than Ruby code it's likely to say that this code:
def foo
puts "hi"
end
is Python code (although it really is Ruby). This is because Python has a def keyword too....
#1071 - Specified key was too long; max key length is 767 bytes
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767 bytes is the stated prefix limitation for InnoDB tables in MySQL version 5.6 (and prior versions). It's 1,000 bytes long for MyISAM tables. In MySQL version 5.7 and upwards this limit has been increased to 3072 bytes.
You also have to be aware that if you set an index on a big char ...
Aggregate / summarize multiple variables per group (e.g. sum, mean)
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Using summarize() from the Hmisc package
(column headings are messy in my example though)
# need to detach plyr because plyr and Hmisc both have a summarize()
detach(package:plyr)
require(Hmisc)
df2 <- with(df1, summarize( cbind(x1, x2), by=llist(year, month), FUN=colSums))
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Java - escape string to prevent SQL injection
... ' to \' , and any \n to \\n so that when the string is evaluated by MySQL SQL injections will be blocked.
12 Answer...
How can I concatenate two arrays in Java?
...his suggestion since it is less dependent on the latest Java versions. In my projects I'm often stuck using older versions of Java or CLDC profiles where some of the facilities like those mentioned by Antti are not available.
– kvn
Feb 7 '11 at 15:46
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Can hash tables really be O(1)?
... O(m) traversal to find out if they are equal.
– JeremyP
May 5 '10 at 8:05
1
@JeremyP: Good point...
Missing XML comment for publicly visible type or member
... :)
///<Summary>
/// Gets the answer
///</Summary>
public int MyMethod()
{
return 42;
}
You need these <summary> type comments on all members - these also show up in the intellisense popup menu.
The reason you get this warning is because you've set your project to output doc...
What is meant by the term “hook” in programming?
...r example, you might hook an event system using "hookEvent(Events.STARTUP, myCallbackFunction)". You are passing a function pointer to the hookEvent function, so it knows what function to call when the event occurs. Hope that helps :-)
– William Brendel
Jan 22 ...
Does Spring @Transactional attribute work on a private method?
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@skaffman: 1 - i make my statment more precise, 2. But the default Proxy is the Interface based - isn't it?
– Ralph
Dec 9 '10 at 10:05
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