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Broadcast receiver for checking internet connection in android app
I am developing an android broadcast receiver for checking internet connection.
21 Answers
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When should you use 'friend' in C++?
...
friend class Mother;
public:
string name( void );
protected:
void setName( string newName );
};
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MongoDB logging all queries
...st
> use myDb
switched to db myDb
> db.getProfilingLevel()
0
> db.setProfilingLevel(2)
{ "was" : 0, "slowms" : 1, "ok" : 1 }
> db.getProfilingLevel()
2
> db.system.profile.find().pretty()
Source: http://docs.mongodb.org/manual/reference/method/db.setProfilingLevel/
db.setProfilingL...
How to send email attachments?
...', "octet-stream")
with open(path, 'rb') as file:
part.set_payload(file.read())
encoders.encode_base64(part)
part.add_header('Content-Disposition',
'attachment; filename="{}"'.format(Path(path).name))
msg.attach(part)
smtp = sm...
Reorder levels of a factor without changing order of values
... I have a very strange situation where the ´reorder´ works on one dataset, not on another. On the other dataset, it throws an error "Error in tapply(X = X, INDEX = x, FUN = FUN, ...) : argument "X" is missing, with no default". Not sure what the solution to this problem is. I can't find any rel...
Excel to CSV with UTF8 encoding [closed]
...are Developer Absolutely, Positively Must Know About Unicode and Character Sets?
– Indolering
May 23 '13 at 5:56
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SVN needs-lock 设置强制只读属性（官方资料） - 环境配置 - 清泛IT论坛，...
...ioning of binary files should follow the lock-modify-unlock model[1]. This setup uses the following three measuresforces users to use property svn:needs-lock on newly added binary files. Denies commits when the property is not available
sets the svn:needs-lock property on all already existing bi...
Correct way to define C++ namespace methods in .cpp file
Probably a duplicate, but not an easy one to search for...
8 Answers
8
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Which MySQL data type to use for storing boolean values
...iate because it uses zero data bytes:
some_flag CHAR(0) DEFAULT NULL
To set it to true, set some_flag = '' and to set it to false, set some_flag = NULL.
Then to test for true, check if some_flag IS NOT NULL, and to test for false, check if some_flag IS NULL.
(This method is described in "High P...
What does functools.wraps do?
...ribute__(name)
return self.func.__getattribute__(name)
def __setattr__(self, name, value):
if name == "func":
return super(DecBase, self).__setattr__(name, value)
return self.func.__setattr__(name, value)
This class proxies all the attribute calls over to...