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What is the difference between vmalloc and kmalloc?
...to kernel memory management that you need to understand - I spend a lot of my time debugging problems with it.
vmalloc() is very rarely used, because the kernel rarely uses virtual memory. kmalloc() is what is typically used, but you have to know what the consequences of the different flags are and...
Is it good practice to use java.lang.String.intern()?
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s = s.intern();
}
}
}
See more (from me) on the myth of non GCed String.intern().
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Check if a JavaScript string is a URL
...end - start; console.log(diff) I put a kettle on, went to a toilet, called my mum and the thing was done in no time...
– Mars Robertson
May 2 '16 at 13:59
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iPhone app in landscape mode, 2008 systems
...rait, and it just didn't work in 3.x. Not wanting to get into the extra dummy view to handle it, we instead required 4.x -- which, a year after this question was asked, is probably OK.
– AndrewS
Apr 24 '11 at 23:10
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How do I create a URL shortener?
...Take an auto-generated, unique numerical key (the auto-incremented id of a MySQL table for example).
For this example, I will use 12510 (125 with a base of 10).
Now you have to convert 12510 to X62 (base 62).
12510 = 2×621 + 1×620 = [2,1]
This requires the use of integer division and modulo. A ...
Creating an R dataframe row-by-row
...row-by-row, and convert that matrix to a dataframe.
For example, rows
dummydata1=c(2002,10,1,12.00,101,426340.0,4411238.0,3598.0,0.92,57.77,4.80,238.29,-9.9)
dummydata2=c(2002,10,2,12.00,101,426340.0,4411238.0,3598.0,-3.02,78.77,-9999.00,-99.0,-9.9)
dummydata3=c(2002,10,8,12.00,101,426340.0,441123...
Access nested dictionary items via a list of keys?
...sted dictionary. Since this is the first SO post I saw for this subject in my google search, I would like to make it slightly better.
The set method in ( Setting a value in a nested python dictionary given a list of indices and value ) seems more robust to missing parental keys. To copy it over:
d...
Using SignalR with Redis messagebus failover using BookSleeve's ConnectionUtils.Connect()
...ultiplexer.
The initial problem encountered was that in spite of creating my own extension methods in BookSleeve to accept a collection of servers, fail-over was not possible.
Now, with the evolution of BookSleeve to StackExchange.Redis, we can now configure collection of servers/ports right in th...
Java “user.dir” property - what exactly does it mean?
I want to use user.dir dir as a base dir for my unit tests (that creates a lot of files). Is it correct that this property points to the current working directory (e.g. set by the 'cd' command)?
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How to detect Ctrl+V, Ctrl+C using JavaScript?
...r that doesn't allow cancelling these events is Opera.
As you can see in my other answer intercepting Ctrl+v and Ctrl+c comes with many side effects, and it still doesn't prevent users from pasting using the Firefox Edit menu etc.
function disable_cutcopypaste(e) {
var fn = function(evt) {
...