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How to call a shell script from python code?
...eprecated) or the whole subprocess module, but this approach
import os
os.system(command)
is one of the easiest.
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How to programmatically cause a core dump in C/C++
...n use setrlimit(RLIMIT_CORE, &core_limits); available via #include <sys/resource.h>. You create a struct of type rlimit and then set the rlim_cur and rlim_max members.
– Brent Writes Code
May 14 at 21:43
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Different floating point result with optimization enabled - compiler bug?
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I think this is the answer. The constant 4.55 gets converted to 4.54999999999999 which is the closest binary representation in 64 bits; multiply by 10 and round again to 64 bits and you get 45.5. If you skip the rounding step by keeping it in an 80-bit register you end up wit...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...then further generalized by only requiring that a function exists that can convert the result to whatever data structure the user wants:
map :: IterableLike i ⇒ (a → b) → i → ([b] → c) → c
I admit that the syntax is a bit clunkier, but the semantics are the same. Basically, it starts ...
“Invalid JSON primitive” in Ajax processing
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Just a guess what does the variable json contain after
var json = Sys.Serialization.JavaScriptSerializer.serialize(obj);?
If it is a valid json object like {'foo':'foovalue', 'bar':'barvalue'} then jQuery might not send it as json data but instead serialize it to foor=foovalue&bar=bar...
Which are more performant, CTE or temporary tables?
...en with two CTEs in SQL server. It was taking 28sec.
I spent two minutes converting them to temp tables and the query took 3 seconds
I added an index to the temp table on the field it was being joined on and got it down to 2 seconds
Three minutes of work and now its running 12x faster all by rem...
Is there a way to perform “if” in python's lambda
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Probably the worst python line I've written so far:
f = lambda x: sys.stdout.write(["2\n",][2*(x==2)-2])
If x == 2 you print,
if x != 2 you raise.
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Case objects vs Enumerations in Scala
...ceVal(character: Char, pointValue: Int) extends super.Val()
implicit def convert(value: Value) = value.asInstanceOf[ChessPieceVal]
}
The following items from the enumeration definition are not available (happens to be identical to the list for directly using the Java Enum):
3.1 - It would be...
Loading basic HTML in Node.js
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sys = require('util') is not needed since nothing is printed to the console.
– Bakudan
Dec 9 '11 at 6:33
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Difference between string and char[] types in C++
... and certain functions may only accept a string as input, requiring you to convert the array to a string. It's better to use strings, they were made so that you don't have to use arrays. If arrays were objectively better we wouldn't have strings.
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