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C# How can I check if a URL exists/is valid?
...de == 200
response.Close();
return (response.StatusCode == HttpStatusCode.OK);
}
catch
{
//Any exception will returns false.
return false;
}
}
From: http://www.dotnetthoughts.net/2009/10/14/how-to-check-remote-file-exists-using-c/
...
Is it possible to pass a flag to Gulp to have it run tasks in different ways?
...CLI
gulp scripts --env production
Original Ref (not available anymore): https://github.com/gulpjs/gulp/blob/master/docs/recipes/pass-params-from-cli.md
Alternative with minimist
From Updated Ref: https://github.com/gulpjs/gulp/blob/master/docs/recipes/pass-arguments-from-cli.md
gulpfile.js
...
What is the difference between and ?
...ent’s contents would be listed explicitly in the document’s outline.
(https://www.w3.org/TR/html/sections.html#the-section-element)
<div>
The <div> element has no special meaning at all. It represents its children. It can be used with the class, lang, and title attributes to mark u...
How to get a file or blob from an object URL?
...the browser, which is giving me this error – Refused to connect to 'blob:https://twitter.com/9e00aec3-6729-42fb-b5a7-01f50be302fa' because it violates the following Content Security Policy directive: "connect-src . Could you have a hint what might I might be doing wrong / not getting?
...
How to “log in” to a website using Python's Requests module?
....com/home/index2.jsp'
requests.post(url, data=payload)
Otherwise...
See https://stackoverflow.com/a/17633072/111362 below.
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Is there a cross-browser onload event when clicking the back button?
...http://webkit.org/blog/516/webkit-page-cache-ii-the-unload-event/
Firefox: https://developer.mozilla.org/En/Using_Firefox_1.5_caching.
Chrome: https://code.google.com/p/chromium/issues/detail?id=2879
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What is the best way to trigger onchange event in react js
...ou trigger with a simulated
flag and react will always fire the event.
https://github.com/jquense/react/blob/9a93af4411a8e880bbc05392ccf2b195c97502d1/src/renderers/dom/client/eventPlugins/ChangeEventPlugin.js#L128
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How do I perform the SQL Join equivalent in MongoDB?
...o the aggregation pipeline is essentially identical to a left outer join:
https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
{
from: <collection to join>,
localField: <field from the input documents>,
...
Finding JavaScript memory leaks with Chrome
...estions here if you still don't get it after studying this documentation.
https://developers.google.com/chrome-developer-tools/docs/javascript-memory-profiling
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Import regular CSS file in SCSS file?
...
Looks like this is unimplemented, as of the time of this writing:
https://github.com/sass/sass/issues/193
For libsass (C/C++ implementation), import works for *.css the same way as for *.scss files - just omit the extension:
@import "path/to/file";
This will import path/to/file.css.
S...