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mailto link with HTML body

... As you can see in RFC 6068, this is not possible at all: The special <hfname> "body" indicates that the associated <hfvalue> is the body of the message. The "body" field value is intended to contain the content for the first text/plain body part of the m...
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What is the difference between require() and library()?

...uld add this: It is probably best to avoid using require() unless you actually will be using the value it returns e.g in some error checking loop such as given by thierry. In most other cases it is better to use library(), because this will give an error message at package loading time if the pack...
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MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...

...MyISAM表类型的话,可按如下方式操作: shell> mysqldump --all-databases --master-data=1 > data.sql 注:master-data选项缺省会打开lock-all-tables,并写入CHANGE MASTER TO语句。 如果数据库使用的是InnoDB表类型的话,则应该使用single-transcation: s...
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What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?

...ch. Because of the inheritance mentioned above, JpaRepository will have all the functions of CrudRepository and PagingAndSortingRepository. So if you don't need the repository to have the functions provided by JpaRepository and PagingAndSortingRepository , use CrudRepository. ...
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JUnit test for System.out.println()

... outputs the version string, etc etc) Edit: Prior versions of this answer called System.setOut(null) after the tests; This is the cause of NullPointerExceptions commenters refer to. share | improve ...
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Why is Thread.Sleep so harmful

... The problems with calling Thread.Sleep are explained quite succinctly here: Thread.Sleep has its use: simulating lengthy operations while testing/debugging on an MTA thread. In .NET there's no other reason to use it. Thread.Sleep(n) m...
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Differences between strong and weak in Objective-C

...r the case, the object gets destroyed and your weak property will automatically get set to nil. The most frequent use cases of weak references in iOS are: delegate properties, which are often referenced weakly to avoid retain cycles, and subviews/controls of a view controller's main view because t...
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How do I import a Swift file from another Swift file?

...eded to import the base module in the test file. In my case, my target is called 'myproject' and I added import myproject and the class was recognised. share | improve this answer | ...
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How do you beta test an iphone app?

... In year 2011, there's a new service out called "Test Flight", and it addresses this issue directly. Apple has since bought TestFlight in 2014 and has integrated it into iTunes Connect and App Store Connect. ...
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How to zip a whole folder using PHP

...$name => $file) { // Skip directories (they would be added automatically) if (!$file->isDir()) { // Get real and relative path for current file $filePath = $file->getRealPath(); $relativePath = substr($filePath, strlen($rootPath) + 1); // Add cur...