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Empty arrays seem to equal true and false at the same time

...false console.log("" == null); // false console.log('-- 5. object, including {}, [], will be call toString() when comparing --'); console.log(12 < {}); // false, since {}.toString() is "[object Object]", and then converted to NaN console.log(12 > {}); // false, sinc...
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What is JSONP, and why was it created?

...a); } To actually make the JSONP call, you can do it about several ways (including using jQuery) but here is a pure JS example: function minify(urlToMinify) { url = escape(urlToMinify); var s = document.createElement('script'); s.id = 'dynScript'; s.type='text/javascript'; s.src = ...
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How to get input type using jquery?

... @Udhayakumar the '[size]' will filter the results to only include select elements with a size attribute thus only the list boxes will be selected and not the drop downs. – Robert Aug 19 '15 at 7:49 ...
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How many Activities vs Fragments?

...kes it much more likely to introduce security risks if the single activity includes both sensitive information and information that's safe to share. A good rule of thumb is to create a new activity whenever the context changes. For example, displaying a different kind of data and while switching fr...
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How would one write object-oriented code in C? [closed]

...f sample code that demonstrates it. First the top-level class structure: #include <stdio.h> // The top-level class. typedef struct sCommClass { int (*open)(struct sCommClass *self, char *fspec); } tCommClass; Then we have the functions for the TCP 'subclass': // Function for the TCP ...
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#pragma pack effect

...o insert any padding between members -- if the definition of the structure includes padding between members, you insert it explicitly (e.g., typically with members named unusedN or ignoreN, or something on that order). share...
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Fragments within Fragments

...docs): "Note: You cannot inflate a layout into a fragment when that layout includes a <fragment>. Nested fragments are only supported when added to a fragment dynamically." share | improve thi...
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Converting an array of objects to ActiveRecord::Relation

... ApplicationRecord and as such cannot be converted' unless clazz.ancestors.include? ApplicationRecord clazz.where(id: self.collect(&:id)) end end A usage example would be array.to_activerecord_relation.update_all(status: 'finished'). Now where do I use it? Sometimes you need to filter...
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How to send HTTP request in java? [duplicate]

...n use java.net.HttpUrlConnection. Example (from here), with improvements. Included in case of link rot: public static String executePost(String targetURL, String urlParameters) { HttpURLConnection connection = null; try { //Create connection URL url = new URL(targetURL); connectio...
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Circular dependency in Spring

...t() method, and this is where you do the critical initialization. (I also include code to check that important properties have actually been set.) share | improve this answer | ...