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Aren't promises just callbacks?
...(api2).then(api3).then(doWork); That is, if api2/api3 functions take input from the last step, and return new promises themselves, they can just be chained without extra wrapping. That is, they compose.
– Dtipson
Dec 22 '15 at 19:11
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How to save a dictionary to a file?
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@Gulzar from what I looked up, np.load returns an ndarray (doing a type(read_dictionary) reveals so) and .item() basically converts that element to a python scalar object which is a dictionary as stated here
– a...
Why doesn't std::queue::pop return value.?
...queue (top_position in my naive implementation) and the element is removed from the queue (and not returned). For all intents and purposes (no matter how you catch the exception in client code) the element at the top of the queue is lost.
This implementation is also inefficient in the case when you...
HTML: Include, or exclude, optional closing tags?
...not contain block-level elements, and <P> is a block level element. From (w3.org/TR/REC-html40/struct/text.html#edef-P) "The P element represents a paragraph. It cannot contain block-level elements (including P itself)."
– Ian Boyd
Jun 9 '10 at 20:25
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What does cmd /C mean? [closed]
...n understand cmd but not cmd /c . I was trying to invoke a java program from the current for which I use Runtime.getRuntime().exec("cmd /C java helloworld"); There arises my doubt.
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Interfaces with static fields in java for sharing 'constants'
...va 1.5+, you can use static imports to import the constants/static methods from another class/interface:
import static com.kittens.kittenpolisher.KittenConstants.*;
This avoids the ugliness of making your classes implement interfaces that have no functionality.
As for the practice of having a cl...
Syntax behind sorted(key=lambda: …)
...e:
sorted(mylist)
[2, 3, 3, 4, 6, 8, 23] # all numbers are in order from small to large.
Example 1:
mylist = [3,6,3,2,4,8,23]
sorted(mylist, key=lambda x: x%2==0)
[3, 3, 23, 6, 2, 4, 8] # Does this sorted result make intuitive sense to you?
Notice that my lambda function told sorte...
Installing Ruby Gem in Windows
...o install it.
For earlier versions:
Download and install DevelopmentKit from the same download page as Ruby Installer. Choose an ?exe file corresponding to your environment (32 bits or 64 bits and working with your version of Ruby).
Follow the installation instructions for DevelopmentKit describe...
How do I POST JSON data with cURL?
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@chodorowicz that's awful! I only know that syntax from VB!
– Sean Patrick Floyd
Jan 27 '14 at 12:42
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Recursively list all files in a directory including files in symlink directories
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Using ls:
ls -LR
from 'man ls':
-L, --dereference
when showing file information for a symbolic link, show informa‐
tion for the file the link references rather than for the link
itself
Or, using find:
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