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Android Studio rendering problems

...th of Aug 18 ie implementation 'com.android.support:appcompat-v7:28.0.0-rc01' facing similar issue Change it to implementation 'com.android.support:appcompat-v7:28.0.0-alpha1 This will solve your problem of Preview. UPDATE Still, in beta01 there is a preview problem for latest appcompact ...
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What are best practices for validating email addresses on iOS 2.0

...*+/=?\\^_`{|}~-]+(?:\\.[a-z0-9!#$%\\&'*+/=?\\^_`{|}" @"~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\" @"x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-" @"z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5" @"]|2[0-4][0-9]|[01]?[0-...
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Named capturing groups in JavaScript regex?

... ECMAScript 2018 introduces named capturing groups into JavaScript regexes. Example: const auth = 'Bearer AUTHORIZATION_TOKEN' const { groups: { token } } = /Bearer (?<token>[^ $]*)/.exec(auth) console.log(token) // "Prints ...
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What is the best way to detect a mobile device?

...-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|...
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increment date by one month

Let's say I have a date in the following format: 2010-12-11 (year-mon-day) 17 Answers ...
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Comparing Dates in Oracle SQL

...means: DD numeric day of the month, 1 - 31 MM numeric month of the year, 01 - 12 ( January is 01 ) YYYY 4 digit year - in my opinion this is always better than a 2 digit year YY as there is no confusion with what century you're referring to. HH24 hour of the day, 0 - 23 MI minute of the hour, 0 - ...
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Printf width specifier to maintain precision of floating-point value

...= 1.0/7.0; printf("%.*e\n", Digs, OneSeventh); // 1.428571428571428492127e-01 But let's dig deeper ... Mathematically, the answer is "0.142857 142857 142857 ...", but we are using finite precision floating point numbers. Let's assume IEEE 754 double-precision binary. So the OneSeventh = 1.0/7....
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App Inventor 2 字典代码块 · App Inventor 2 中文网

...usetts Institute of Technology" }, "enrolled": true, "classes": ["6.001", "18.01", "8.01"] } 上面的示例显示,在 JSON 中,键(在 : 之前引用的文本)可以映射到不同类型的值。 允许的类型包括数字、文本、其他字典、布尔值和列表。在块语...
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What does .SD stand for in data.table in R

...y=y]. – Matt Dowle Dec 14 '11 at 18:01 6 ...
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How can I find the number of days between two Date objects in Ruby?

... irb(main):005:0> a = Date.parse("12/1/2010") => #<Date: 4911063/2,0,2299161> irb(main):007:0> b = Date.parse("12/21/2010") => #<Date: 4911103/2,0,2299161> irb(main):016:0> c = b.mjd - a.mjd => 20 This uses a Modified Julian Day Numbe...