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Round to at most 2 decimal places (only if necessary)

... If the value is a text type: parseFloat("123.456").toFixed(2); If the value is a number: var numb = 123.23454; numb = numb.toFixed(2); There is a downside that values like 1.5 will give "1.50" as the output. A fix suggested by @minitech: var numb = 1.5; numb = +nu...
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How can I create a UIColor from a hex string?

...anHexInt:&hexInt]; return hexInt; } Usage: NSString *hexStr1 = @"123ABC"; NSString *hexStr2 = @"#123ABC"; NSString *hexStr3 = @"0x123ABC"; UIColor *color1 = [self getUIColorObjectFromHexString:hexStr1 alpha:.9]; NSLog(@"UIColor: %@", color1); UIColor *color2 = [self getUIColorObjectFromH...
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Converting a Java Keystore into PEM Format

...asd Certificate: Data: Version: 3 (0x2) Serial Number: 1237334757 (0x49c03ae5) Signature Algorithm: dsaWithSHA1 Issuer: C=AU, ST=Victoria, L=Melbourne, CN=foo.example.com Validity Not Before: Mar 18 00:05:57 2009 GMT Not After : Jun...
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How to show full object in Chrome console?

...null,4)); } // how to call it let obj = { a: 1, b: [2,3] }; print('hello',123,obj); will output in console: [ "hello", 123, { "a": 1, "b": [ 2, 3 ] } ] sha...
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Using str_replace so that it only acts on the first match?

...n preg_replace($from, $to, $content, 1); } echo str_replace_first('abc', '123', 'abcdef abcdef abcdef'); // outputs '123def abcdef abcdef' The magic is in the optional fourth parameter [Limit]. From the documentation: [Limit] - The maximum possible replacements for each pattern in each s...
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Run an OLS regression with Pandas Data Frame

... Jarque-Bera (JB): 0.498 Skew: -0.123 Prob(JB): 0.780 Kurtosis: 1.474 Cond. No. 5.21e+04 ============================================================================== Warnings: [1] The con...
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String concatenation: concat() vs “+” operator

...ing a = "abc"; public String b = "xyz"; public String c = "123"; } @org.openjdk.jmh.annotations.State(Scope.Thread) public static class State4 { public String a = "abc"; public String b = "xyz"; public String c = "123"; public String d = ...
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How can I update NodeJS and NPM to the next versions?

... 123 npm update npm -g didn't work for me on windows - it completed without output but npm remained the same version (1.3.11 when the most rece...
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How to make a Java Generic method static?

... you are calling the static method, Greet.sayHello("Bob"); Greet.sayHello(123); JVM interprets it as the following. Greet.<String>sayHello("Bob"); Greet.<Integer>sayHello(123); Both giving the same outputs. Hello Bob Hello 123 ...
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How should I write tests for Forms in Django?

... response = self.client.post("/form-url/", data={ 'name': 'test123', 'category': 1, 'note': 'note123' }, content_type=django.test.client.MULTIPART_CONTENT) If any stuck with getting empty instance when saving the form, then check the requests sent from br...