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Rails: Get Client IP address
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request.remote_ip is an interpretation of all the available IP address information and it will make a best-guess. If you access the variables directly you assume responsibility for testing them in the correct precedence order. Proxies introduce a number of headers th...
How to get a specific “commit” of a gem from github?
...it://github.com/rails/rails.git', :tag => 'v2.3.5'
Source: How to install gems from git repositories
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How to request Administrator access inside a batch file
...s method doesn't forward arguments. Do you know How that can be done? Basically what I observe is that on the first line %1 has some value and on the last line %1 is null. I need to forward the arguments.
– prongs
Jan 11 '13 at 11:54
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Member initialization while using delegated constructor
...out the C++11 standard and i found this question which describes how to call your ctor from another ctor in the same class to avoid having a init method or the like. Now i'm trying the same thing with code that looks like this:
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SQL Server IIF vs CASE
...e query plan will be the same. It is, perhaps, "syntactical sugar" as initially implemented.
CASE is portable across all SQL platforms whereas IIF is SQL SERVER 2012+ specific.
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What is the purpose of willSet and didSet in Swift?
... for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is modified without needing another field. For instance, in that example:
class Foo {
var myP...
How to remove globally a package from Composer?
I ran this command to install globally PHPUnit :
2 Answers
2
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When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...quire casting due to Scala's type system.
Also in Java people don't typically make immutable objects which I recommend you do for messaging. Consequently its very easy in Java to accidentally do something using Akka that will not scale (using mutable objects for messages, relying on weird closure ...
Multiple INSERT statements vs. single INSERT with multiple VALUES
...on't seem to be available so instead I had to look at the equivalent UNION ALL construction in SQL Server 2005.
A typical stack trace is below
sqlservr.exe!FastDBCSToUnicode() + 0xac bytes
sqlservr.exe!nls_sqlhilo() + 0x35 bytes
sqlservr.exe!CXVariant::CmpCompareStr() + 0x2b bytes
sqls...
Cause CMAKE to generate an error
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The message() method has an optional argument for the mode, allowing STATUS, WARNING, AUTHOR_WARNING, SEND_ERROR, and FATAL_ERROR. STATUS messages go to stdout. Every other mode of message, including none, goes to stderr.
You want SEND_ERROR if you want to output an error, but contin...