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Android Studio says “cannot resolve symbol” but project compiles

...Android Studio reported me all the Classes of SDK cannot resolved(included String, Integer, TextView etc.). before that, aStudio also told me she cannot find out the android-14 SDK which I used to compile my projects. I ignored that so the problems occurred. finally, I found this answer and follow, ...
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Compare floats in php

... What about performance? bccomp() takes strings as arguments. Anyway you could use PHP_FLOAT_DIG for the scale argument. – Code4R7 Sep 28 '17 at 20:29 ...
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When using a Settings.settings file in .NET, where is the config actually stored?

... can use to programmatically get user.config file location: public static string GetDefaultExeConfigPath(ConfigurationUserLevel userLevel) { try { var UserConfig = ConfigurationManager.OpenExeConfiguration(userLevel); return UserConfig.FilePath; } catch (ConfigurationException e) ...
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Default value in Doctrine

...can use: <?php /** * @Entity */ class myEntity { /** * @var string * * @Column(name="myColumn", type="string", length="50") */ private $myColumn = 'myDefaultValue'; ... } PHP-level default values are preferred as these are also properly available on newly crea...
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Getting the encoding of a Postgres database

... A programmatic solution: SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = 'yourdb'; share | improve this answer | follow ...
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Relation between CommonJS, AMD and RequireJS?

...ore being loaded. For example, the definition could be: define('module/id/string', ['module', 'dependency', 'array'], function(module, factory function) { return ModuleContents; }); So, CommonJS and AMD are JavaScript module definition APIs that have different implementations, but both come ...
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Populate a Razor Section From a Partial

... to emit the required scripts Here are the helper methods: public static string RequireScript(this HtmlHelper html, string path, int priority = 1) { var requiredScripts = HttpContext.Current.Items["RequiredScripts"] as List<ResourceInclude>; if (requiredScripts == null) HttpContext.C...
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How does MongoDB sort records when no sort order is specified?

...natural order) is an undefined implementation detail. Maintaining order is extra overhead for storage engines and MongoDB's API does not mandate predictability outside of an explicit sort() or the special case of fixed-sized capped collections which have associated usage restrictions. For typical wo...
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What does send() do in Ruby?

...eed to read attributes on an object. For example, if you have an array of strings, if you try to iterate through them and call them on your object, it won't work. atts = ['name', 'description'] @project = Project.first atts.each do |a| puts @project.a end # => NoMethodError: undefined method ...
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Binding a WPF ComboBox to a custom list

...st"; } } public class PhoneBookEntry { public string Name { get; set; } public PhoneBookEntry(string name) { Name = name; } public override string ToString() { return Name; } } public clas...