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Pointer vs. Reference
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Excelent point regarding a pointer being NULL. If you have a pointer parameter then you must either check explicitly that it is not NULL, or search all usages of the function to be sure that it is never NULL. This effort is...
C++ sorting and keeping track of indexes
...f samples in ascending order, but I also want to remember the original indexes of the new samples.
15 Answers
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Does R have an assert statement as in python?
...t checks if something is true and if not prints a given error message and exits
3 Answers
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How to create a printable Twitter-Bootstrap page
...ing.
It could be a separate stylesheet:
<link rel="stylesheet" type="text/css" media="print" href="print.css">
or one you share for all devices:
<link rel="stylesheet" type="text/css" href="bootstrap.min.css"> # Note there's no media attribute
Then, you can write your styles for pr...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...it is already set to false (because false and nil are both as falsy). I.e. x ||= true is equivalent to x = true. You can see how that might pose a problem. It only happens with booleans because no other datatype in Ruby has a falsy value.
– Amadan
Jun 10 '13 at...
What do people think of the fossil DVCS? [closed]
... an sQLite database is arguably safer than any other approach. See link text for some of the advantages of using a transactional database to store a repository. As for bloat: The entire thing is in a single self-contained executable which seems to disprove that concern.
Full disclosure: I am th...
How to quit scala 2.11.0 REPL?
In the last version of scala (2.10.3) REPL, I can type exit to quit from REPL. However, in Scala 2.11.0 this doesn't work.
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...teless protocol (ie UDP), there is no problem because "connections" don't exist - multiple people can send packets to the same port, and their packets will arrive in whatever sequence. Nobody is ever in the "connected" state.
For a stateful protocol (like TCP), a connection is identified by a 4-tu...
How to download image using requests
... With the help of your answer I could able to find data in text file, steps I used are r2 = requests.post(r.url, data); print r2.content. But now I also want to know filename. is their any cleaned way? -- presently I found file name in header -- r2.headers['content-disposition'] that ...
Secure hash and salt for PHP passwords
...gth of a password. If your users want a sentence with supercalifragilisticexpialidocious in it, don't prevent them from using it.
Don't strip or escape HTML and special characters in the password.
Never store your user's password in plain-text.
Never email a password to your user except when they ha...