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Why use 'virtual' for class properties in Entity Framework model definitions?
...t(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First? for a more thorough discussion.
Edit to clarify "create a proxy around":
By "create a proxy around" I'm referring specifically to what the Entity Framework does. The Entity Framework requires your navigation properties to be...
Export to CSV via PHP
...fopen("php://output", 'w');
fputcsv($df, array_keys(reset($array)));
foreach ($array as $row) {
fputcsv($df, $row);
}
fclose($df);
return ob_get_clean();
}
Then you can make your user download that file using something like:
function download_send_headers($filename) {
// ...
Iterate over a list of files with spaces
...ely clean. And makes me feel nicer than changing IFS in conjunction with a for loop
– Derrick
Aug 18 '11 at 4:13
15
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Check for internet connection availability in Swift
...ability class and other third party libraries seemed to be too complicated for me to translate to Swift. I Googled some more and I came across this article which shows a simple method to check for network availability. I set out to translate this to Swift. I hit many snags but thanks to Martin R fro...
How can I find where Python is installed on Windows?
I want to find out my Python installation path on Windows. For example:
19 Answers
19
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...n terms, it creates an identifier binding on the object Environment Record for the global environment. That makes it a property of the global object because the global object is where identifier bindings for the global environment's object Environment Record are held. This is why the property is non...
What is the purpose of “return await” in C#?
...s soon as the DoAnotherThingAsync() method returns, which is likely long before it actually completes. This means the first version is probably buggy (because Foo is disposed too soon), while the second version will work fine.
...
Get all directories within directory nodejs
...nc(source).map(name => join(source, name)).filter(isDirectory)
Update for Node 10.10.0+
We can use the new withFileTypes option of readdirSync to skip the extra lstatSync call:
const { readdirSync } = require('fs')
const getDirectories = source =>
readdirSync(source, { withFileTypes: tr...
Why would one omit the close tag?
... you simply make a habit of following the standard (and setup PHP-CS-Fixer for your code) you can forget the issue. Otherwise you will always need to keep the issue in your mind.
Bonus: a few gotchas (actually currently one) related to these 2 characters:
Even some well-known libraries may conta...
How to write LaTeX in IPython Notebook?
...ave a %%latex magic that makes the whole cell Latex without the $$ wrapper for each line.
Refer notebook tour for Rich Display System
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