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Why is “while ( !feof (file) )” always wrong?
...n point", if you will.)
EOF
Now we get to EOF. EOF is the response you get from an attempted I/O operation. It means that you were trying to read or write something, but when doing so you failed to read or write any data, and instead the end of the input or output was encountered. This is true for e...
Go to beginning of line without opening new line in VI
...gain, vim quickref doc:
g0 to first character in screen line (differs from "0"
when lines wrap)
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Detect network connection type on Android
...riendly) information about connection type. You can use this code (derived from a @hide method in TelephonyManager.java).
This method returns a String describing the current connection type.
i.e. one of : "WIFI" , "2G" , "3G" , "4G" , "5G" , "-" (not connected) or "?" (unknown)
Remark: This code ...
What is an example of the Liskov Substitution Principle?
... to model this with inheritance. However if in code you made Square derive from Rectangle, then a Square should be usable anywhere you expect a Rectangle. This makes for some strange behavior.
Imagine you had SetWidth and SetHeight methods on your Rectangle base class; this seems perfectly logical...
Devise Secret Key was not set
...how do you get them to your production environment? You push them directly from your local development environment to heroku using figaro, and your secret keys will end up as environment variables on heroku
– ahnbizcad
Jan 31 '15 at 10:00
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Get the distance between two geo points
... and last point but in a rectal line , so if you take any other directions from point a to b its gonna never be accuarated since the path is different, thats when distanceBetween joins in, you can save each distance between the points beign created and then with the final parameter results[] get the...
jQuery click events firing multiple times
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best answer, you saved me from a silly hack, this is much better because it if you have multiple onclick events to the same element but in different locations this will not affect the rest, while unbind() and off() will just destroy other onclicks tha...
What is the difference between print and puts?
... Actually, a newline after each argument. That's a key point and not clear from the Ruby docs (since the example has only 1 argument).
– cdunn2001
Jul 29 '12 at 23:49
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“ImportError: No module named” when trying to run Python script
..., but also on your current working directory. When starting an interpreter from the command line, the current directory you're operating in is the same one you started ipython in. If you run
import os
os.getcwd()
you'll see this is true.
However, let's say you're using an ipython notebook, run ...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
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See the bit twiddling hacks for many solutions. Copypasting from there is obviously simple to implement. =)
For example (on a 32-bit CPU):
uint8_t b = byte_to_reverse;
b = ((b * 0x0802LU & 0x22110LU) | (b * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16;
If by “simple to...