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Should I use a class or dictionary?
...ould your __init__ code go?
Classes are for bundling related data (and usually code).
Dictionaries are for storing key-value relationships, where usually the keys are all of the same type, and all the values are also of one type. Occasionally they can be useful for bundling data when the key/attri...
Usage of __slots__?
What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not?
11 A...
Devise Secret Key was not set
...t done much) and did rails g devise user before I tried to create the user table and migrate. This fixed the problem.
– Matt
Feb 9 '14 at 23:10
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Does adding a duplicate value to a HashSet/HashMap replace the previous value
...ten. The key is just used to get the hashvalue() and find the value in the table with it.
Since HashSet uses the keys of a HashMap and sets arbitrary values which don't really matter (to the user) as a result the Elements of the Set aren't replaced either.
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Strangest language feature
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JavaScript truth table:
'' == '0' // false
0 == '' // true
0 == '0' // true
false == 'false' // false
false == '0' // true
false == undefined /...
Optional Parameters with C++ Macros
...ello, World!", 18, bold);
return 0;
}
This makes it easier for the caller of the macro, but not the writer.
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Two inline-block, width 50% elements wrap to second line [duplicate]
...med good, but it breaks in for some cases (not sure why, two 50% divs in a table cell, with nowrap, the 2nd div is displayed outside the cell). With just removing the space between divs (as per tw16's answer), it works...
– Eino Gourdin
Feb 14 '17 at 15:20
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Is there a printf converter to print in binary format?
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You could use a small table to improve speed1. Similar techniques are useful in the embedded world, for example, to invert a byte:
const char *bit_rep[16] = {
[ 0] = "0000", [ 1] = "0001", [ 2] = "0010", [ 3] = "0011",
[ 4] = "0100", [ 5]...
How to select following sibling/xml tag using xpath
...eir HTML is organized like below. All of the data in their specifications table is ' desc ' while the titles of each section are in ' name. ' Below are two examples of data from Newegg pages.
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GCC -g vs -g3 GDB Flag: What is the Difference?
...includes descriptions of functions and external variables, and line number tables, but no information about local variables.
Level 3 includes extra information, such as all the macro definitions present in the program. Some debuggers support macro expansion when you use -g3.
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