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Dictionary vs Object - which is more efficient and why?
What is more efficient in Python in terms of memory usage and CPU consumption - Dictionary or Object?
8 Answers
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Move branch pointer to different commit without checkout
...is method appears to be: (A) harder to use (B) harder to remember, and (C) more dangerous
– Steven Lu
Feb 18 '15 at 10:17
10
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Strangest language feature
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Or, more usefully, "0123456789abcdef"[x & 0xf]
– Dipstick
Jan 3 '10 at 15:33
17
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Get string character by index - Java
...AtZero = text.charAt(0);
System.out.println(charAtZero); // Prints f
For more information, see the Java documentation on String.charAt. If you want another simple tutorial, this one or this one.
If you don't want the result as a char data type, but rather as a string, you would use the Character....
Using Enum values as String literals
...aration.
Option Two: add overriding properties to your enums if you want more control
public enum Modes {
mode1 ("Fancy Mode 1"),
mode2 ("Fancy Mode 2"),
mode3 ("Fancy Mode 3");
private final String name;
private Modes(String s) {
name = s;
}
public b...
Matplotlib plots: removing axis, legends and white spaces
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I think that the command axis('off') takes care of one of the problems more succinctly than changing each axis and the border separately. It still leaves the white space around the border however. Adding bbox_inches='tight' to the savefig command almost gets you there, you can see in the example...
Fastest way to determine if an integer's square root is an integer
...squares. However, in my experience, calling the modulo operator (%) costs more than the benefit one gets, so I use bit tricks involving 255 = 2^8-1 to compute the residue. (For better or worse, I am not using the trick of reading individual bytes out of a word, only bitwise-and and shifts.)
int64 ...
How to create default value for function argument in Clojure
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This answer more effectively captures the "proper" way to do it than the accepted answer, though both will work fine. (of course, a great power of Lisp languages is that there are usually many different ways to do the same fundamental th...
Why does Javascript's regex.exec() not always return the same value? [duplicate]
...ect, it will start from the index past the end of the last match.
When no more matches are found, the index is reset to 0 automatically.
To reset it manually, set the lastIndex property.
reg.lastIndex = 0;
This can be a very useful feature. You can start the evaluation at any point in the s...
Faster way to develop and test print stylesheets (avoid print preview every time)?
... docs regarding Media type emulation can be found here: Preview styles for more media types.
Open the DevTools emulation drawer by clicking the More overrides ••• more overrides icon in the top right corner of the browser viewport. Then, select Media in the emulation drawer.
UPDATE 12/04...