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Using “super” in C++
...nned in the question, I have still to find an interesting use to that. For now, I only see it as a hack, but it was worth mentioning, if only for the differences with Java (where you can't chain "super").
– paercebal
Oct 8 '08 at 7:50
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Using R to download zipped data file, extract, and import data
... See help(gzfile) -- I was thinking that the gzip protocol may now uncompress (stone old) .z files too now that the patent has long expired. It may not. Who uses .z anyways? The 1980s called, they want their compression back ;-)
– Dirk Eddelbuettel
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How to check if a string is a valid hex color representation?
... on the other hand, will only parse if the whole string matches the radix. Now, Number() doesn't take a radix parameter, but luckily, you can prefix number literals to get a number in other radii.
Here's a table for clarification:
╭─────────────┬───────...
Serving static files with Sinatra
...I want to deploy the app to Heroku, but I cannot find a way to do it. I am now trying to make the app working with Sinatra.
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Using -performSelector: vs. just calling the method
... performSelector is also useful to suppress compile warnings. If you know the method exists (like after using respondsToSelector), it will stop Xcode from saying "may not respond to your_selector". Just don't use it instead of finding out the real cause of the warning. ;)
–...
How do I handle ImeOptions' done button click?
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I know this question is old, but I want to point out what worked for me.
I tried using the sample code from the Android Developers website (shown below), but it didn't work. So I checked the EditorInfo class, and I realized tha...
What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?
....gz DOES NOT EXTRACT the archive to the filesystem (I double checked right now to be sure and it's confirmed)
– Cecile
Oct 19 '18 at 15:19
50
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Vertically align text within a div [duplicate]
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Update April 10, 2016
Flexboxes should now be used to vertically (or even horizontally) align items.
body {
height: 150px;
border: 5px solid cyan;
font-size: 50px;
display: flex;
align-items: center; /* Vertical center alignment */
...
Please explain the exec() function and its family
...ocess (the parent) as its parent PID (PPID).
Because the two processes are now running exactly the same code, they need to be able to tell which is which - the return code of fork() provides this information - the child gets 0, the parent gets the PID of the child (if the fork() fails, no child is c...
Why aren't pointers initialized with NULL by default?
...ion point was he/she needed to perform some operation and then assign.
So now we have the situation that the compiler has added an extra instruction to the code that initializes the variable to NULL then later the developer code is added to do the correct initialization. Or under other conditions t...