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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
...e data to read. If all-blank streams are also acceptable, then the correct form is:
while( !(in>>ws).eof() )
{
int data;
in >> data;
if ( in.fail() ) /* handle with break or throw */;
/* this will never fire if the eof is reached cleanly */
// now use data
}
Summar...
How to draw a dotted line with css?
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answered Nov 17 '09 at 4:01
ChssPly76ChssPly76
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Convert normal date to unix timestamp
How can I convert normal date 2012.08.10 to unix timestamp in javascript?
11 Answers
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How does Facebook Sharer select Images and other metadata when sharing my URL?
...e, use the Facebook Url Debugger / Linter Tool that they launched in June 2010 to refresh the cache and troubleshoot any meta tag issues on your page.
Also, the images on the page must be publicly accessible to the Facebook crawler. You should specify absolute url's like http://example.com/youri...
How to check if element in groovy array/hash/collection/list?
...this?
– Big McLargeHuge
Aug 7 at 22:01
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What are detached, persistent and transient objects in hibernate?
...original docs provided by frameworks.. which sometime itself have hidden information with proper description just need to explore. only prob is we don't find it easily :)
– agpt
Aug 9 '14 at 13:16
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Change R default library path using .libPaths in Rprofile.site fails to work
...s RStudio material at: https://support.rstudio.com/hc/en-us/articles/200549016-Customizing-RStudio
In your case it appears that RStudio is not respecting the Rprofile.site settings or perhaps is overriding them by reading an .Rprofile setting from one of the RStudio defaults. It should also be ment...
Filter rows which contain a certain string
...35 19.90 1 1 4 1 Toyota Corolla
4 21.5 4 120.1 97 3.70 2.465 20.01 1 0 3 1 Toyota Corona
If you would like to do it the other way round, namely excluding Toyota and Mazda cars, the filter command looks like this:
dplyr::filter(mtcars, !grepl('Toyota|Mazda', type))
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Can two different strings generate the same MD5 hash code?
...ile there are no such known attacks (preimage attacks) against MD5 (as of 2011), it could become possible by extending the current research on collision attacks.
If these turn out to be a problem, I suggest looking at the SHA-2 series of hash functions (SHA-256, SHA-384 and SHA-512). The downside i...
What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?
... See ruby catch-throw and efficiency to understand more about the performance difference.
– Franklin Yu
May 21 '19 at 14:37
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