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How to use the PI constant in C++
...383279502884 (roughly speaking). I wouldn't bet on it. Be normal and use a raw literal to define the constant. Why lose precision when you don't need to?
– Thomas Eding
Oct 23 '12 at 23:49
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Given an emacs command name, how would you find key-bindings ? (and vice versa)
...ble. Key-maps are kept in variables, however the key codes are stored in a raw format. Try C-h v isearch-mode-map for an example.
For more help on getting help, you can type
C-h ?
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How can I read a large text file line by line using Java?
...u can skip the InputStream and use FileReader.
InputStream ins = null; // raw byte-stream
Reader r = null; // cooked reader
BufferedReader br = null; // buffered for readLine()
try {
String s;
ins = new FileInputStream("textfile.txt");
r = new InputStreamReader(ins, "UTF-8"); // leave c...
Git Commit Messages: 50/72 Formatting
...or incorporating that data here but oh well… :-)
If you want to see the raw lengths:
cd /path/to/repo
git shortlog | grep -e '^ ' | sed 's/[[:space:]]\+\(.*\)$/\1/' | awk '{print length($0)}'
or a text-based histogram:
cd /path/to/repo
git shortlog | grep -e '^ ' | sed 's/[[:space...
Upgrade Node.js to the latest version on Mac OS
...install nvm and have multiple versions of Node.js installed.
curl https://raw.github.com/creationix/nvm/master/install.sh | sh
source ~/.nvm/nvm.sh
and then run:
nvm install 0.8.22 #(or whatever version of Node.js you want)
you can see what versions you have installed with :
nvm list
and y...
Xcode debugging - displaying images
...l tools.
What i'm doing to test images while debugging is to convert that raw data into an image-file format, like .png, and then saving it somewhere, and then i'm opening the image with any image viewing tool.
I have a piece of code for that purpose, which look basically like that:
NSData *image...
Best way to strip punctuation from a string
...
s.translate(str.maketrans('', '', string.punctuation))
It's performing raw string operations in C with a lookup table - there's not much that will beat that but writing your own C code.
If speed isn't a worry, another option though is:
exclude = set(string.punctuation)
s = ''.join(ch for ch in...
Bin size in Matplotlib (Histogram)
...have a basic misunderstanding how the histogram function works. It expects raw data. So, in your example, your data array should contain 10 values between 0 an 10, 1 value between 10 and 20, and so on. Then the function does the summing-up AND the drawing. What you're doing above is a workaround bec...
Could I change my name and surname in all previous commits?
...TER_NAME="${NEW_NAME}"
export GIT_COMMITTER_EMAIL="${NEW_EMAIL}"
fi'
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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...y for particularly weird conversions and bit manipulations, like turning a raw data stream into actual data, or storing data in the low bits of a pointer to aligned data.
C-style cast and function-style cast are casts using (type)object or type(object), respectively, and are functionally equivale...