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Error Dropping Database (Can't rmdir '.test\', errno: 17)

... a strange file ".empty": sh-3.2# ls -la data/test total 0 drwxr-xr-x 3 _mysql wheel 102 Apr 15 12:36 . drwxr-xr-x 11 _mysql wheel 374 Apr 15 12:28 .. -rw-r--r-- 1 _mysql wheel 0 Mar 31 10:19 .empty Once I rm'd the .empty file, the drop database command succeeded. I don't know whe...
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Package objects

...initions get imported when someone outside of that package imports foo.bar._. This way you can prevent to require the API client to issue additional imports to use your library effectively - e.g. in scala-swing you need to write import swing._ import Swing._ to have all the goodness like onEDT a...
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What is this 'Lambda' everyone keeps speaking of?

...nsive operations to get a user. Ajax for example users[name] = user_from_ajax; } return users[name]; }; Later on, we may notice that we have a similar function: var photos = []; var getPhoto = function (name) { if (! photo[name]) { // expensive operations to get a use...
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range over interface{} which stores a slice

...t interface{}) { switch t := t.(type) { case []string: for _, value := range t { fmt.Println(value) } case []int: for _, value := range t { fmt.Println(value) } } } Check out the code on the playground. ...
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How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]

...at for an overview. You need to read the MS-DOS header, then read the IMAGE_NT_HEADERS structure. This contains the IMAGE_FILE_HEADER structure which contains the info you need in the Machine member which contains one of the following values IMAGE_FILE_MACHINE_I386 (0x014c) IMAGE_FILE_MACHINE_IA64...
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How to force NSLocalizedString to use a specific language

...; @end Implementation #import <objc/runtime.h> static const char _bundle=0; @interface BundleEx : NSBundle @end @implementation BundleEx -(NSString*)localizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName { NSBundle* bundle=objc_getAssociatedObject(s...
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How can I use getSystemService in a non-activity class (LocationManager)?

... You can go for this : getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); share | improve this answer | follow | ...
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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?

... show you the name of the index, something like this: CONSTRAINT region_ibfk_1 FOREIGN KEY (country_id) REFERENCES country (id) ON DELETE NO ACTION ON UPDATE NO ACTION Now simply issue an: alter table region drop foreign key region_ibfk_1; And finally an: alter table region d...
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How do I use a custom deleter with a std::unique_ptr member?

I have a class with a unique_ptr member. 6 Answers 6 ...
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Can I define a class name on paragraph using Markdown?

...for <blockquote>) I found the following online: Function function _DoBlockQuotes_callback($matches) { ...cut... //add id and class details... $id = $class = ''; if(preg_match_all('/\{(?:([#.][-_:a-zA-Z0-9 ]+)+)\}/',$bq,$matches)) { foreach ($matches[1] as $match) {...