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Aliases in Windows command prompt
...ay make the alias(es) persistent with the following steps,
Create a .bat or .cmd file with your DOSKEY commands.
Run regedit and go to HKEY_CURRENT_USER\Software\Microsoft\Command Processor
Add String Value entry with the name AutoRun and the full path of your .bat/.cmd file.
For example, %USERP...
When would you use a WeakHashMap or a WeakReference?
...r seen an implementation of so I'm trying to figure out what the use case for them is and how the implementation would work. When have you needed to use a WeakHashMap or WeakReference and how was it used?
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Can you control how an SVG's stroke-width is drawn?
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No, you cannot specify whether the stroke is drawn inside or outside an element. I made a proposal to the SVG working group for this functionality in 2003, but it received no support (or discussion).
As I noted in the proposal,
you can achieve the same visual result as "inside"...
Performance of static methods vs instance methods
My question is relating to the performance characteristics of static methods vs instance methods and their scalability. Assume for this scenario that all class definitions are in a single assembly and that multiple discrete pointer types are required.
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How do you read from stdin?
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You could use the fileinput module:
import fileinput
for line in fileinput.input():
pass
fileinput will loop through all the lines in the input specified as file names given in command-line arguments, or the standard input if no arguments are provided.
Not...
Difference between Math.Floor() and Math.Truncate()
What is the difference between Math.Floor() and Math.Truncate() in .NET?
12 Answers
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Checking if a double (or float) is NaN in C++
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According to the IEEE standard, NaN values have the odd property that comparisons involving them are always false. That is, for a float f, f != f will be true only if f is NaN.
Note that, as some comments below have pointed ou...
MongoDB or CouchDB - fit for production? [closed]
I was wondering if anyone can tell me if MongoDB or CouchDB are ready for a production environment.
19 Answers
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what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
...others
hadoop dfs <args>
dfs is very specific to HDFS. would work for operation relates to HDFS. This has been deprecated and we should use hdfs dfs instead.
hdfs dfs <args>
same as 2nd i.e would work for all the operations related to HDFS and is the recommended command ins...
What's wrong with using $_REQUEST[]?
...ST in a combined way. In fact that's what you almost always want to do:
for a plain idempotent request usually submitted via GET, there's the possibility the amount of data you want won't fit in a URL so it has be mutated to a POST request instead as a practical matter.
for a request that has a re...