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What is the difference between a weak reference and an unowned reference?

...e: String) { self.name = name } } class CreditCard { let number: UInt64 unowned let customer: Customer init(number: UInt64, customer: Customer) { self.number = number; self.customer = customer } } In this example, a Customer may or may not have a CreditCard, but a CreditCard will alwa...
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Phase • Animations made easy! - Extensions - Kodular Community

...er-image"); if (splashImage) { splashImage.src = "data:image/svg+xml;base64,".concat(encodedSvg); const connectStart = performance.timing.connectStart || 0; const targetTime = connectStart + DELAY_TARGET; let splashInterval; let discourseReady; const swapSplash = () => { splashWrappe...
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Why use the SQL Server 2008 geography data type?

...h coordinate is stored as a double-precision floating-point number that is 64 bits (8 bytes) long, and 8-byte binary value is roughly equivalent to 15 digits of decimal precision, so comparing a decimal(9,6) which is only 5 bytes, isn't exactly a fair comparison. Decimal would have to be a minimum o...
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Best practices for SQL varchar column length [closed]

...n UK are usually between 1-35 characters. If you decide to make it varchar(64), you're not really going to hurt anything... unless you're storing this guy's family name that's said to be up to 666 characters long. In that case, maybe varchar(1028) makes more sense. And in case it's helpful, here's ...
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Sanitizing strings to make them URL and filename safe?

...ovides: canonicalize (string $input, [bool $strict = true]) decodeFromBase64 (string $input) decodeFromURL (string $input) encodeForBase64 (string $input, [bool $wrap = false]) encodeForCSS (string $input) encodeForHTML (string $input) encodeForHTMLAttribute (string $input) encodeForJavaScript (str...
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How does the Java 'for each' loop work?

...Test B: 220,770,915 nanoseconds B faster by 155,019,903 nanoseconds (40.75164734599769% faster) [C:\java_code\]java TimeIteratorVsIndexIntArray 1000000 Test A: 326,373,762 nanoseconds Test B: 202,555,566 nanoseconds B faster by 123,818,196 nanoseconds (37.437545972215744% faster) I also ran this ...
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How to check if a map contains a key in Go?

... 64 Searched on the go-nuts email list and found a solution posted by Peter Froehlich on 11/15/2009...
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How do I verify/check/test/validate my SSH passphrase?

...ic key has been saved in /tmp/my_key.pub. The key fingerprint is: de:24:1b:64:06:43:ca:76:ba:81:e5:f2:59:3b:81:fe rob@Robs-MacBook-Pro.local The key's randomart image is: +--[ RSA 2048]----+ | .+ | | . . o | | = . + | | = + + | | o = o S . | | + = +...
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What is the difference between char s[] and char *s?

...modify the contents of the array, the behavior is undefined. GCC 4.8 x86-64 ELF implementation Program: #include <stdio.h> int main(void) { char *s = "abc"; printf("%s\n", s); return 0; } Compile and decompile: gcc -ggdb -std=c99 -c main.c objdump -Sr main.o Output contai...
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AsyncProcedures异步过程扩展 · App Inventor 2 中文网

...sgext_.asyncprocedure.aix 开发动机 Async Proc一个扩展,您可以使用它来异步运行过程。您不再需要等待循环完成,也不必担心由于Android系统认为您的应用程序无响应而导致应用崩溃。 功能概述 ...