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Postgres unique constraint vs index
...ead access to the table.
Adding a constraint does put a table lock (so all selects are blocked) since it is added via ALTER TABLE.
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Which MIME type to use for a binary file that's specific to my program?
...simply want to make you project a more 'professional looking' go ahead and select a unique mimetype for you to use,
it would make no difference since the operation-system would have no handle to open it with (some browsers has few bundled-plugins, for example new Google Chrome versions has a built-i...
Accessing console and devtools of extension's background.js
... by doing a normal "show developer console" then use the dropdown arrow to selects its "javascript environment" then you'll have access to its methods, etc.
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git push fails: RPC failed; result=22, HTTP code = 411
...the integrated configuration.
In a file explorer press left mouse button, select TortoiseGit -> Settings. Accept the info message. Now, you can choose if you want to configure the property only for the current project or system whide. For systemwide configuration press "edit systemwide gitconfig...
Using printf with a non-null terminated string
...rray is null-terminated, it just treats it as a longer array that it's sub-selecting from - which means that if you have a string with nulls in it, this will cause problems.
– lahwran
Mar 16 '16 at 0:39
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Access Asset Catalog programmatically
...568 support, is there. If you view the attributes of an image set, you can select 'Device Specific' from the Devices drop down, and then you can add an R4 image, which will appear on 4" devices running iOS 7.
– bandejapaisa
Sep 23 '13 at 15:29
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What is an ORM, how does it work, and how should I use one? [closed]
...anually, you would do something like that:
book_list = new List();
sql = "SELECT book FROM library WHERE author = 'Linus'";
data = query(sql); // I over simplify ...
while (row = data.next())
{
book = new Book();
book.setAuthor(row.get('author');
book_list.add(book);
}
With an ORM ...
How to convert JSON to XML or XML to JSON?
...bject)d.Value);
if (xml.HasElements) attr.Add("_value", xml.Elements().Select(e => GetXmlData(e)));
else if (!xml.IsEmpty) attr.Add("_value", xml.Value);
return new Dictionary<string, object> { { xml.Name.LocalName, attr } };
}
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How to check if a value exists in an array in Ruby
... match.
Don't use these:
# bad examples
array.grep(element).any?
array.select { |each| each == element }.size > 0
...
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Do you debug C++ code in Vim? How? [closed]
...ey are able to jump around definitions in a C++ class aware manner without selecting and installing several different plugins themselves, and that includes while step debugging stuff. As of 2020 the least worst one for me was Eclipse: https://www.slant.co/topics/1411/~best-ides-for-c-on-linux
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