大约有 30,000 项符合查询结果(耗时:0.0480秒) [XML]

https://stackoverflow.com/ques... 

SQL Server Insert if not exists

... instead of below Code BEGIN INSERT INTO EmailsRecebidos (De, Assunto, Data) VALUES (@_DE, @_ASSUNTO, @_DATA) WHERE NOT EXISTS ( SELECT * FROM EmailsRecebidos WHERE De = @_DE AND Assunto = @_ASSUNTO AND Data = @_D...
https://stackoverflow.com/ques... 

How do you push just a single Git branch (and no other branches)?

...he current branch to it's upstream. git config push.default upstream It means git will update only the current (checked out) branch when you do git push. Other valid options are: nothing : Do not push anything (error out) unless a refspec is explicitly given. This is primarily meant for people...
https://stackoverflow.com/ques... 

In javascript, is an empty string always false as a boolean?

...t's a good reason not to use the object versions in your code, and it does mean that if (str.length) handles this edge case whereas if (str) would not. – Chris Middleton Sep 17 '16 at 1:55 ...
https://stackoverflow.com/ques... 

Signal handling with multiple threads in Linux

... I'm a little confused about what is meant by "root thread". Does this mean that the handler for SIGTERM will always run in the main thread, or can it run in any thread? – Stephen Nutt Oct 1 '14 at 21:18 ...
https://stackoverflow.com/ques... 

How can I install from a git subdirectory with pip?

...ot directory of src/repo, not to src/repo/package, as I would expect. This means that py_modules can’t be imported, and entry_points don’t actually work: they both raise an ImportError: No module named package. – Mark G. Dec 7 '15 at 17:57 ...
https://stackoverflow.com/ques... 

How are people managing authentication in Go? [closed]

...on, etc. My answer assumes you are looking for local authentication which means you manage the user's identities in your application. The server must expose a set of external API allow users and admins Managing the accounts and how they want to identify themselves to Server to achieve trustable co...
https://stackoverflow.com/ques... 

What does the explicit keyword mean?

What does the explicit keyword mean in C++? 11 Answers 11 ...
https://stackoverflow.com/ques... 

What is the X-REQUEST-ID http header?

...s (that a client can see) with server logs (that the server can see). The idea of the X-Request-ID is that a client can create some random ID and pass it to the server. The server then include that ID in every log statement that it creates. If a client receives an error it can include the ID in a b...
https://stackoverflow.com/ques... 

Elevating process privilege programmatically?

...ted from Explorer with the "Run as Administrator" menu command. This does mean the UAC prompt will come up and will need to be acknowledged by the user: if this is undesirable (for example because it would happen in the middle of a lengthy process), you'll need to run your entire host process with ...
https://stackoverflow.com/ques... 

Difference between and text

.... You can only place text on the button and give it a size and a border by means of CSS. Its original (and current) intent was to execute a script without the need to submit the form to the server. Normal submit button with <input> As with: <input type="submit" /> Like the former, b...