大约有 6,800 项符合查询结果（耗时：0.0394秒） [XML]
Should I use a data.frame or a matrix?
...onal methods. while data.frame is a list.
The difference is down to vector vs list. for computation efficiency, stick with matrix. Using data.frame if you have to.
share
|
improve this answer
...
Differences between Perl and PHP [closed]
...
I've noticed that most PHP vs. Perl pages seem to be of the
PHP is better than Perl because
<insert lame reason here>
ilk, and rarely make reasonable comparisons.
Syntax-wise, you will find PHP is often easier to understand than Perl, p...
If Python is interpreted, what are .pyc files?
...uage or is it a Python implementation? Also, is this meme of "interpreted" vs compiled perhaps just a terminology confusion because Python's VM is often referred to as its "interpreter"? It would be just as valid to call the JVM or the .NET runtime interpreters. They both mostly interpret bytecode i...
Rebasing and what does one mean by rebasing pushed commits
...s"
ProGit: See "Private Managed Team"
Jarrod Spillers blog: See "git merge vs git rebase: Avoiding Rebase Hell"
share
|
improve this answer
|
follow
|
...
Reverse a string in Python
... I love this answer, explanations about optimizations, readability vs optimization, tips on what the teacher wants. I'm not sure about the best practice section with the while and decrementing the index, although perhaps this is less readable: for i in range(len(a_string)-1, -1, -1): . Most...
Why should I not include cpp files and instead use a header?
...rly a hundred times and cannot figure what to do for null ( as no object ) vs null ( as nephew ) without using programming by exceptions."
– Nicholas Jordan
Nov 9 '09 at 0:12
...
Difference between DateTime and Time in Ruby
...rger values should be performance, which is better when Integers are used (vs. Bignums (values outside of Integer range) or Rationals (when nanoseconds are tracked)):
Since Ruby 1.9.2, Time implementation uses a signed 63 bit integer, Bignum or Rational. The integer is a number of nanoseconds si...
Fastest sort of fixed length 6 int array
...
@Rex: sorry, I missed the > vs >= pattern at first sight. It works in every case.
– kriss
May 8 '10 at 6:41
3
...
Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
...inue their work.
Most of the changes are mentioned above:
Program Files vs Program Files (x86)
In the beginning the 16/86bit files were written on, '86' Intel processors.
System32 really means System64 (on 64-bit Windows)
When developers first started working with Windows7, there were several ...
Most useful NLog configurations [closed]
...om here at SO (you might have seen some or all of these already):
log4net vs. Nlog
Logging best practices
What's the point of a logging facade?
Why do loggers recommend using a logger per class?
Use the common pattern of naming your logger based on the class Logger logger = LogManager.GetCurren...