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What is the string concatenation operator in Oracle?
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@ipip: I am confused - if by "logical operator" you mean operators like AND, NOT etc. then of course || is not a logical operator. But what does that have to due with 'x'||null returning x? n+null returns null, so is + a logical operator?
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How to get memory available or used in C#
How can I get the available RAM or memory used by the application?
6 Answers
6
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What is this 'Waiting for Background operation' in Visual Studio 2012?
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It is a very generic diagnostic. It is triggered by COM, heavily used in Visual Studio to implement extensibility. The underlying trigger is the IMessageFilter interface. The trigger occurs when COM marshals a method call to another thread and that call doesn't complete f...
Close virtual keyboard on button press
...lick();
return true;
}
});
And you hide keyboard by:
public void hideKeybord(View view) {
inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(),
InputMethodManager.RESULT_UNCHANGED_SHOWN);
}
You should also fire keyboard h...
How do I get the entity that represents the current user in Symfony2?
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Perform debounce in React.js
...t instance, and not a single debounced function at the class level, shared by each component instance.
Take care of React's event pooling
This is related because we often want to debounce or throttle DOM events.
In React, the event objects (i.e., SyntheticEvent) that you receive in callbacks ar...
How to simulate target=“_blank” in JavaScript
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Oh, I see. window.open is blocked by Firefox pop-up blocker, but target="_blank" isn't. Should I just ask the client to enable popups from their own website?
– Phillip Senn
Oct 15 '09 at 18:22
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Sourcemaps off by one line in Chrome, with Ruby on Rails, Webpack, and React JS
I'm having an issue where the sourcemaps generated by Webpack using the inline-source-map configuration setting are off by one line when I use the Chrome devtools debugger.
Webpack is set up inside a Ruby on Rails application to generate a concatenated, unminified JavaScript file composed of a cou...
Change all files and folders permissions of a directory to 644/755
...w /path/to/dir
which basically means:
to change file modes -Recursively by giving:
user: read, write and eXecute permissions,
group and other users: read and eXecute permissions, but not -write permission.
Please note that X will make a directory executable, but not a file, unless it's alread...
How do I auto-hide placeholder text upon focus using css or jquery?
...e this functionality when the field is disabled here is the CSS code: /* Hiding the placeholder text (if any), when the holding field is disabled */ input:disabled::-webkit-input-placeholder { color:transparent; } input:disabled:-moz-placeholder { color:transparent; } input:disabled::-moz-placehold...