大约有 47,000 项符合查询结果(耗时:0.0512秒) [XML]

https://stackoverflow.com/ques... 

What's Alternative to Singleton

...e Google Testing blog has a series of entries about avoiding Singleton (in order to create testable code). Maybe this can help you: Using dependency injection to avoid singletons Singletons are Pathological Liars Root Cause of Singletons Where have all the Singletons Gone? The last article expla...
https://stackoverflow.com/ques... 

Why extend the Android Application class?

...id tools for global state management instead of static vars/singletons and etc. – Oleksandr Karaberov Nov 12 '15 at 12:06 ...
https://stackoverflow.com/ques... 

How to make a phone call programmatically?

...198+","+1+","+1)); startActivity(callIntent); for multiple ordered call This is used to DTMF calling systems. If call is drop then, you should pass more " , " between numbers. share | ...
https://stackoverflow.com/ques... 

How do I import CSV file into a MySQL table?

... Here are the steps: Prepare the CSV file to have the fields in the same order as the MySQL table fields. Remove the header row from the CSV (if any), so that only the data is in the file. Go to the phpMyAdmin interface. Select the table in the left menu. Click the import button at the top. Browse...
https://stackoverflow.com/ques... 

Internal Error 500 Apache, but nothing in the logs?

...th grep PHP /var/log/syslog. Probably because I had error_log = syslog in /etc/php5/apache2/php.ini. – mivk Nov 18 '16 at 20:15  |  show 2 mor...
https://stackoverflow.com/ques... 

How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails

...STINCT(*)", :conditions => ["date > #{self.date}"], :limit => 1, :order => 'date', :group => "date").show_generated_sql and have this call the construct_finder_sql method. – rswolff Aug 28 '09 at 17:02 ...
https://stackoverflow.com/ques... 

Bower and devDependencies vs dependencies

...d scripts, e.g. unit testing, packaging scripts, documentation generation, etc. dependencies are required for production use, and assumed required for dev as well. Including devDependencies within dependencies, as you have it, won't be harmful; the module will just bundle more files (bytes) during...
https://stackoverflow.com/ques... 

ALTER TABLE to add a composite primary key

...t it after you recreate the primary key. Also, when using composite keys, order is important. These 1) ALTER TABLE provider ADD PRIMARY KEY(person,place,thing); and 2) ALTER TABLE provider ADD PRIMARY KEY(person,thing,place); are not the the same thing. They both enforce uniqueness on that set ...
https://stackoverflow.com/ques... 

You asked me to pull without telling me which branch you want to merge with

...h would be pushed by default. Is there some configuration I can add in order to make all local branches track their remotes properly in the future? I don't think that there is. When you created bucket-4 locally, as I assume happened, the remote-tracking branch didn't exist, so it can't be set...
https://stackoverflow.com/ques... 

What are the advantages of using the C++ Boost libraries? [closed]

...d to compose stuff easily. smart pointers, functions, lambdas, bindings, etc. Then there are boost libraries which exploit this newer way of writing C++ to provide things like networking, regex, etc etc... if you are writing lots of for loops, or hand rolling function objects, or doing memory m...