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How do I use extern to share variables between source files?
...er of files provides a tentative
definition of the variable.
As long as no more than one file provides an initialized definition,
then the various files end up sharing a common single definition of the
variable:
file10.c
#include "prog2.h"
long l; /* Do not do this in portable code */
void inc(v...
Gulp command not found after install
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“Origin null is not allowed by Access-Control-Allow-Origin” error for request made by application ru
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Java: Multiple class declarations in one file
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Insert text with single quotes in PostgreSQL
... your application when user input is possible, though. @Craig's answer has more on that. More details:
SQL injection in Postgres functions vs prepared queries
Values inside Postgres
When dealing with values inside the database, there are a couple of useful functions to quote strings properly:
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Difference between HashMap, LinkedHashMap and TreeMap
...ava 1.1 before the collections framework existed. It should not be used anymore, because its API is cluttered with obsolete methods that duplicate functionality, and its methods are synchronized (which can decrease performance and is generally useless). Use ConcurrentHashMap instead of Hashtable.
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.NET - Dictionary locking vs. ConcurrentDictionary
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Thread-safety is more than just using the right collection. Using the right collection is a start, not the only thing you have to deal with. I guess that is what the OP wanted to know. I can't guess why this was accepted, it's been a while si...
Fluent Validation vs. Data Annotations [closed]
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Some more points from this (webdevbros.net/2010/12/03/…) article: 1. Too many annotations make your model s look ugly (similar to your point 3) 2. Better reusability 3. Better performance (as no Reflection)
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What is the motivation for bringing Symbols to ES6?
...kas, unfortunately, Object.getOwnPropertySymbols is not the only leak; the more difficult one is the ability to use proxies to intercept access to a "private" property.
– Andreas Rossberg
May 2 '15 at 17:27
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