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How to define @Value as optional
...swered Jan 8 '18 at 13:23
alonso_50alonso_50
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MySQL Cannot Add Foreign Key Constraint
...storyID is an INT, Patient.MedicalHistory also needs to be an INT, not a SMALLINT.
Also, you should run the query set foreign_key_checks=0 before running the DDL so you can create the tables in an arbitrary order rather than needing to create all parent tables before the relevant child tables.
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Duplicate headers received from server
...invalidChars);
string replace = Regex.Replace(name, invalidReStr, "_").Replace(";", "").Replace(",", "");
return replace;
}
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Is it possible to make anonymous inner classes in Java static?
... a reference to the pointer of the containing instance (they are also not called inner classes anymore, they are called nested classes).
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How to copy files from 'assets' folder to sdcard?
I have a few files in the assets folder. I need to copy all of them to a folder say /sdcard/folder. I want to do this from within a thread. How do I do it?
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What is JSON and why would I use it?
...the official documentation, but I still haven't got to the point where I really understand what JSON is, and why I'd use it.
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Check for internet connection availability in Swift
...unc isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)...
How to handle button clicks using the XML onClick within Fragments
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That's what I'm doing now essentially but it is a lot messier when you have multiple fragments that each need to receive click events. I'm just aggravated with fragments in general because paradigms have dissolved around them.
– smith32...
What are carriage return, linefeed, and form feed?
...as section separators. (It's uncommonly used in source code to divide logically independent functions or groups of functions.) Text editors can use this character when you "insert a page break". This is commonly escaped as \f, abbreviated FF, and has ASCII value 12 or 0x0C.
As control character...
How can I efficiently download a large file using Go?
... Go that will store the content directly into a file instead of storing it all in memory before writing it to a file? Because the file is so big, storing it all in memory before writing it to a file is going to use up all the memory.
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