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The cause of “bad magic number” error when loading a workspace and how to avoid it?
...ead of readRDS() (yes, 9 months later, I'm back here for pretty much the same mistake).
– Waldir Leoncio
Nov 13 '14 at 17:35
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Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?
I stumbled over node.js sometime ago and like it a lot. But soon I found out that it lacked badly the ability to perform CPU-intensive tasks. So, I started googling and got these answers to solve the problem: Fibers, Webworkers and Threads (thread-a-gogo). Now which one to use is a confusion and one...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...tions when a return value might be absent. The intent is that the caller immediately check the Optional and extract the actual value if it's present. If the value is absent, the caller can substitute a default value, throw an exception, or apply some other policy. This is typically done by chaining ...
What type of hash does WordPress use?
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The WordPress password hasher implements the Portable PHP password hashing framework, which is used in Content Management Systems like WordPress and Drupal.
They used to use MD5 in the older versions, but sadly for me, no more. You can generate hashes using ...
Count number of records returned by group by
...ference: This does not work on DB/2 (in my case on IBM iSeries). See my comment at Thomas´s answer
– Bjinse
Dec 13 '12 at 8:05
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Get last n lines of a file, similar to tail
...no assumptions about line length. Backs through the file one block at a time till it's found the right number of '\n' characters.
def tail( f, lines=20 ):
total_lines_wanted = lines
BLOCK_SIZE = 1024
f.seek(0, 2)
block_end_byte = f.tell()
lines_to_go = total_lines_wanted
b...
How do I record audio on iPhone with AVAudioRecorder?
...v Center and only reference to the classes. I am a newbie at iPhone development, so I am looking for a simple sample to get me started.
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Should I use tag for icons instead of ? [closed]
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some people even go further and misuse other elements, like <tt> = tooltip and so on... wanna help me found ATSMOHE? "Against the semantic misuse of HTML-Elements"
– Christoph
Jun 21...
How to render an ASP.NET MVC view as a string?
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Here's what I came up with, and it's working for me. I added the following method(s) to my controller base class. (You can always make these static methods somewhere else that accept a controller as a parameter I suppose)
MVC2 .ascx style
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How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
22 Answers
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