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What is polymorphism, what is it for, and how is it used?
...ed to know about the details. All he needs to know is that if he makes one order, everything will be taken care of. All the details should be left to the experts.
This allows the president to do what he does best: set general policy, look good and play golf :P.
How is it actually implemented - th...
Why this line xmlns:android=“http://schemas.android.com/apk/res/android” must be the first in the la
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This is just the XML Name Space declaration. We use this Name Space in order to specify that the attributes listed below, belongs to Android. Thus they starts with "android:"
You can actually create your own custom attributes. So to prevent the name conflicts where 2 attributes are named the sa...
Syntax behind sorted(key=lambda: …)
...ment and use that to create a transformed list which will inform me on the order of final sorted list.
Check it out:
mylist = [3,6,3,2,4,8,23]
sorted(mylist, key=WhatToSortBy)
Base example:
sorted(mylist)
[2, 3, 3, 4, 6, 8, 23] # all numbers are in order from small to large.
Example 1...
How to select where ID in Array Rails ActiveRecord without exception
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Is there any way to keep the order of the your_id_array when you get the objects back?
– Joshua Pinter
Sep 9 '15 at 18:16
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Best way of invoking getter by reflection
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Is there a way to invoke the methods in the order in which the fields are listed in the Java file?
– LifeAndHope
Jun 21 '15 at 19:37
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Get the latest record from mongodb collection
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So, what's the difference with this order : db.collection.find().sort({$natural:-1}).limit(1).pretty()
– Leo
Nov 2 '16 at 2:32
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
...e worked for me as well, but still not sure where to find the error log in order to figure out the cause and try to prevent it from happening again...
– Maleka
Mar 9 '19 at 10:40
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Use tnsnames.ora in Oracle SQL Developer
...ced answer :
SQL Developer will look in the following location in this order for a tnsnames.ora file
$HOME/.tnsnames.ora
$TNS_ADMIN/tnsnames.ora
TNS_ADMIN lookup key in the registry
/etc/tnsnames.ora ( non-windows )
$ORACLE_HOME/network/admin/tnsnames.ora
Local...
boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
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//non-unique as some subscribers might have more than one number
ordered_non_unique<
composite_key<
phonebook_entry,
member<phonebook_entry,std::string,&phonebook_entry::family_name>,
member<phonebook_entry,std::string,&phonebook_entry::given_name>
...
Is short-circuiting logical operators mandated? And evaluation order?
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Yes, short-circuiting and evaluation order are required for operators || and && in both C and C++ standards.
C++ standard says (there should be an equivalent clause in the C standard):
1.9.18
In the evaluation of the following expressions
a &a...