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Java Synchronized Block for .class
... synchronized(this) ensures that there is exactly one thread per instance. If this makes the actual code in the block thread-safe depends on the implementation. If mutate only state of the instance synchronized(this) is enough.
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Does Git warn me if a shorthand commit ID can refer to 2 different commits?
If cee157 can refer to 2 different commit IDs, such as
2 Answers
2
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What's the equivalent of Java's Thread.sleep() in Objective-C/Cocoa?
... done on a join operation on a JAVA thread. You sleep for 10 millis, check if the thread is dead then you can dealloc it.
– Mike S
Sep 20 '10 at 6:45
1
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Case insensitive regular expression without re.compile?
... @Abhijeet You really shouldn't use try/except in that case. Just check if any of the strings are None first.
– erb
Oct 21 '19 at 5:56
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defaultdict of defaultdict?
...ns in our case the value of d[Key_doesnt_exist] will be defaultdict(int).
If you try to access a key from this last defaultdict i.e. d[Key_doesnt_exist][Key_doesnt_exist] it will return 0, which is the return value of the argument of the last defaultdict i.e. int().
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Failed to serialize the response in Web API with Json
...it isn't necessary to remove formatters or supported media types typically if you are just specifying the "Accepts" header in the request. Playing around with that stuff can sometimes make things more confusing.
Example:
public class UserModel {
public string Name {get;set;}
public string...
Create subdomains on the fly with .htaccess (PHP)
...DNS server *.website.com
Then in your vhost container you will need to specify the wildcard as well *.website.com - This is done in the ServerAlias DOCs
Then extract and verify the subdomain in PHP and display the appropriate data
The long version
1. Create a wildcard DNS entry
In your DNS setti...
How do I call an Angular.js filter with multiple arguments?
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Would have been nice if you just posted the filter in Javascript
– Obi
May 25 '14 at 4:57
1
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how to add records to has_many :through association in rails
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@Mischa how should i handle error if House.find(params[:house_id]) is nill.. i got error of TypeMismatch if params[:house_id] is nil.. i already using rescue. but is there any better_way..??
– Vishal
Jul 30 '16 at 10:5...
Pragma in define macro
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If you're using c99 or c++0x there is the pragma operator, used as
_Pragma("argument")
which is equivalent to
#pragma argument
except it can be used in macros (see section 6.10.9 of the c99 standard, or 16.9 of the c++0...