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What are the differences between concepts and template constraints?
... Cont must be a Sortable type. A neat thing is that it can be written in a more concise form as:
template <Sortable Cont>
void sort(Cont& container);
Now if you attempt to pass anything that is not considered Sortable to this function, you'll get a nice error that immediately tells you ...
Cannot add or update a child row: a foreign key constraint fails
...rID field based on the values currently stored in table1. If you post some more code I can help you diagnose the specific cause.
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RuntimeWarning: invalid value encountered in divide
...ry:
import numpy as np
np.seterr(divide='ignore', invalid='ignore')
For more details see:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.seterr.html
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SQL JOIN and different types of JOINs
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How to load JAR files dynamically at Runtime?
... Using this approach you need to make sure you won't call this load method more than once for each class. Since you're creating a new class loader for every load operation, it can not know whether the class was already loaded previously. This can have bad consequences. For example singletons not wor...
Passing data between controllers in Angular JS?
...xtending the methods so they are not just holding data in memory and to be more persistent (save to server via $http call, for example).
– Chalise
Aug 24 '15 at 0:26
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How do you use variables in a simple PostgreSQL script?
... Being completely new to PostgreSQL this threw me for a while, here's some more tips: + Make sure you end your statements with a semicolon! + Because there is no variable identifier you may want to use an _ or something similar to avoid ambiguous column names. + You can set the variable to a value i...
What is the advantage of using Restangular over ngResource?
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how is .one('users', 123) any more or less "knowing" about your URL than '/users/123'? (just playing Devil's advocate) It just seems like '/foo/123/bar/123' is a lot easier than .one('foo', 123).one('bar', 123).
– Ben Lesh
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What is the difference between MOV and LEA?
...except in 64-bit mode for RIP-relative addressing. mov r32, imm32 runs on more ports. lea eax, [edx*4] is a copy-and-shift which can't be done in one instruction otherwise, but in the same register LEA just takes more bytes to encode because [eax*4] requires a disp32=0. (It runs on different port...