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Rails create or update magic?
... User.where(name: "Roger").first_or_initialize
user.email = "email@example.com"
user.save
Alternatively, you can use find_or_initialize_by.
user = User.find_or_initialize_by(name: "Roger")
In Rails 3.
user = User.find_or_initialize_by_name("Roger")
user.email = "email@example.com"
user.save
...
Easiest way to read from a URL into a string in .NET
...st tested it (with string s = client.DownloadString("https://stackoverflow.com/questions/1048199/easiest-way-to-read-from-a-url-into-a-string-in-net/1048204");) - works absolutely fine. Whatever is happening: it isn't https that is the immediate problem. Are you sure the site has a valid cert?
...
How to percent-encode URL parameters in Python?
... wanna retain the colon from http: , do urllib.parse.quote('http://example.com/some path/').replace('%3A', ':')
– nuttynibbles
May 9 '19 at 7:27
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When to encode space to plus (+) or %20?
...m-urlencoded content, such as the query part of a URL:
http://www.example.com/path/foo+bar/path?query+name=query+value
In this URL, the parameter name is query name with a space and the value is query value with a space, but the folder name in the path is literally foo+bar, not foo bar.
%20 is a...
How can I make a JUnit Test wait?
... If you are using code analysis tools like sonarqube they will complain about Thread.sleep saying something like Using Thread.sleep in a test is just generally a bad idea. It creates brittle tests that can fail unpredictably depending on environment ("Passes on my machine!") or load. Do...
How to detect if CMD is running as Administrator/has elevated privileges?
...ent answer instead.
Found this solution here: http://www.robvanderwoude.com/clevertricks.php
AT > NUL
IF %ERRORLEVEL% EQU 0 (
ECHO you are Administrator
) ELSE (
ECHO you are NOT Administrator. Exiting...
PING 127.0.0.1 > NUL 2>&1
EXIT /B 1
)
Assuming that doesn't ...
Unresolved external symbol on static class members
...ng C++ 17 you can just use the inline specifier (see https://stackoverflow.com/a/11711082/55721)
If using older versions of the C++ standard, you must add the definitions to match your declarations of X and Y
unsigned char test::X;
unsigned char test::Y;
somewhere. You might want to also initiali...
How to set up a git project to use an external repo submodule?
...ming you already have MyWebApp set up as a repo, from terminal issue these commands:
cd MyWebApp
git submodule add git://github.com/jquery/jquery.git externals/jquery
This will create a directory named externals/jquery* and link it to the github jquery repository. Now we just need to init the sub...
Why do my list item bullets overlap floating elements
...contents of the box.
Only IE6 needs an ul { zoom: 1; } in our conditional comments to make sure the ul has layout.
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How do I check if file exists in jQuery or pure JavaScript?
...
With jQuery:
$.ajax({
url:'http://www.example.com/somefile.ext',
type:'HEAD',
error: function()
{
//file not exists
},
success: function()
{
//file exists
}
});
EDIT:
Here is the code for checking 404 status, without using j...