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Supabase 拓展：App 接入 Supabase 后端服务（Auth + PostgreSQL + Storage...
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Passing ssh options to git clone
...st host
HostName host
User user
SshOption1 Value1
SshOption2 Value2
The Host entry is what you’ll specify on the command line, and the HostName is the true hostname. They can be the same, or the Host entry can be an alias. The User entry is used if you do not specify user@ on the...
Detect Chrome extension first run / update
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In newer versions of Chrome (since Chrome 22), you can use the chrome.runtime.onInstalled event, which is much cleaner.
Example:
// Check whether new version is installed
chrome.runtime.onInstalled.addListener(function(details){
if(details.reason == "install"){...
What is The Rule of Three?
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1832
Introduction
C++ treats variables of user-defined types with value semantics.
This means that ob...
How to download an entire directory and subdirectories using wget?
...get -r --no-parent http://abc.tamu.edu/projects/tzivi/repository/revisions/2/raw/tzivi/
The Parameters are:
-r //recursive Download
and
--no-parent // Don´t download something from the parent directory
If you don't want to download the entire content, you may use:
-l1 just download...
How to exit an if clause
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102
(This method works for ifs, multiple nested loops and other constructs that you can't break from...
How to indent a few lines in Markdown markup?
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22 Answers
22
Active
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ETag vs Header Expires
...ient request, the server can then determine whether to send the file (HTTP 200) or tell the client to just use their local copy (HTTP 304). An ETag is basically just a checksum for a file that semantically changes when the content of the file changes.
The Expires header is used by the client (and ...
Difference between Select and ConvertAll in C#
...implemented only by List<T>. The ConvertAll method exists since .NET 2.0 whereas LINQ was introduced with 3.5.
You should favor Select over ConvertAll as it works for any kind of list, but they do the same basically.
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How to check if std::map contains a key without doing insert?
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answered Oct 7 '10 at 23:15
PotatoswatterPotatoswatter
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