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How do I match any character across multiple lines in a regular expression?
...lt; "$str" (-0 slurps the whole file into memory, -p prints the file after applying the script given by -e). Note that using -000pe will slurp the file and activate 'paragraph mode' where Perl uses consecutive newlines (\n\n) as the record separator.
gnu-grep - grep -Poz '(?si)abc\K.*?(?=<Foobar&...
Best practice for instantiating a new Android Fragment
I have seen two general practices to instantiate a new Fragment in an application:
13 Answers
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Can I incorporate both SignalR and a RESTful API?
I have a single page web app developed using ASP.NET. I recently converted many of the web methods to be push based, using the SignalR library. This really sped up the page considerably and reduced a lot of the server calls from the page.
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How do I hide javascript code in a webpage?
...said, I think you should focus on performance, reliability and making your app great. If you absolutely have to protect some algorithm, put it on the server, but other than that, compete on being the best at you do, not by having secrets. That's ultimately how success works on the web anyway.
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
In my Rails (3.2) app, I have a bunch of tables in my database but I forgot to add a few not null constraints. I've googled around but I can't find how to write a migration which adds not null to an existing column.
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What are the differences between a UIView and a CALayer?
...ed before Core Animation existed, UIViews are intended to be lightweight wrappers around these CALayers.
As I describe in the similar question "When to use CALayer on the Mac/iPhone?", working directly with CALayers doesn't give you significant performance advantages over UIViews. One of the reaso...
When should assertions stay in production code? [closed]
...
Actually, the worst thing that happens is when code crashes due to something that is NOT an assert. If the code will definitely crash later on with 100% probability, then the assert must absolutely be there. If you deref a pointer, then you have to implic...
Start an Activity with a parameter
...GAME_ID, gameId))
Get the Id in SecondActivity:
class CaptureActivity : AppCompatActivity() {
companion object {
const val PARAM_GAME_ID = "PARAM_GAME_ID"
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val gameId = ...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...动力，可能在大多数的人眼里，php是专为web而生，做wep app是一流的快速好用，并极易简单和容易上手，做起web所需的各项功能可能是分分钟搞定，然后做socket了？可能就觉得不屑一顾了，好像是不务正业，用了自己的短板去做...
Labels for radio buttons in rails form
My question is similar to this one
but for a Rails app.
5 Answers
5
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