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What is lexical scope?
...
First, lexical scope (also called static scope), in C-like syntax:
void fun()
{
int x = 5;
void fun2()
{
printf("%d", x);
}
}
Every inner level can access its outer levels.
There is another way, called dynamic scope used by the first implementation of Lisp, again in a ...
What's the $unwind operator in MongoDB?
...e" ,
author : "bob" ,
posted : new Date () ,
pageViews : 5 ,
tags : [ "fun" , "good" , "fun" ] ,
comments : [
{ author :"joe" , text : "this is cool" } ,
{ author :"sam" , text : "this is bad" }
],
other : { foo : 5 }
}
Notice how tags is actually an array of 3 ite...
How can I change the language (to english) in Oracle SQL Developer?
... this option will be:
oracle.translated.locales = de,es,it,ja,ko,pt_BR,zh_CN,zh_TW
The original value was:
oracle.translated.locales = de,fr,es,it,ja,ko,pt_BR,zh_CN,zh_TW
The configuration above (sqldeveloper.conf file) will be wrong after remove french support and the french language does not...
List all developers on a project in Git
...committer and author), you could use git log:
git log --pretty="%an %ae%n%cn %ce" | sort | uniq
%an author name
%ae author email
%n new line
%cn committer name
%ce committer email
Other placeholders are described in the pretty print documentation of git log.
...
How to know what the 'errno' means?
... not thread safe while strerror_r() is thread safe. MT-Safe or Thread-Safe functions are safe to call in the presence of other threads. MT, in MT-Safe, stands for Multi Thread. -p26, The GNU C Library char * strerror(int errnum ) [Function] Preliminary: | MT-Unsafe race:strerror | AS-Unsafe heap i18...
What are the advantages of using nullptr?
...ere doesn't seem to be an advantage. But consider the following overloaded functions:
void f(char const *ptr);
void f(int v);
f(NULL); //which function will be called?
Which function will be called? Of course, the intention here is to call f(char const *), but in reality f(int) will be called! ...
https connection using CURL from command line
...ificate:
* subject: C=US; ST=California; L=Mountain View; O=Google Inc; CN=www.google.com
* start date: 2016-01-07 11:34:33 GMT
* expire date: 2016-04-06 00:00:00 GMT
* issuer: C=US; O=Google Inc; CN=Google Internet Authority G2
* SSL certificate verify ok.
* Server GFE/2.0 is not bla...
What's the best practice to round a float to 2 decimals? [duplicate]
...s 0. Do you know how to show always sign and all (2) decimals?? Example: 2.1234 --> 2.12 but 2.1 --> 2.1 but no 2.10
– vgonisanz
Jan 18 '12 at 14:36
1
...
Load RSA public key from file
...ce;
}
/**
* Returns a CSR as string
* @param cn Common Name
* @param OU Organizational Unit
* @param Org Organization
* @param LocName Location name
* @param Statename State/Territory/Province/Region
* @param Country Country
*...
Is there a method that works like start fragment for result?
...{
private lateinit var sharedViewModel: SharedViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
activity?.run {
sharedViewModel = ViewModelProviders.of(activity).get(SharedViewModel::class.java)
}
}
...