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Rails.env vs RAILS_ENV
... what env one is running in. What's preferred? Are they, for all intents and purposes equal?
5 Answers
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Synchronise ScrollView scroll positions - android
I have 2 ScrollViews in my android layout. How can I synchronise their scroll positions?
4 Answers
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Password reset for Azure database
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And if you are unsure about the admin username it's listed beneath the "Reset Administrator Password" link.
– Klaas
Apr 8 '14 at 13:08
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How to count objects in PowerShell?
...the PowerShell user guide, one of the core PowerShell concepts is that commands accept and return objects instead of text. So for example, running get-alias returns me a number of System.Management.Automation.AliasInfo objects:
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Can gcc output C code after preprocessing?
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If your compiler commands already has a parameter like -o something.o you may also want to change it to -o something.i. Otherwise the preprocessed output will be in the .o file.
– Tor Klingberg
Mar 19 '15 at...
How to check if a URL is valid
...by:
require 'uri'
if url =~ URI::regexp
# Correct URL
end
Like Alexander Günther said in the comments, it checks if a string contains a URL.
To check if the string is a URL, use:
url =~ /\A#{URI::regexp}\z/
If you only want to check for web URLs (http or https), use this:
url =~ /\A#{U...
How to implement a confirmation (yes/no) DialogPreference?
....setTitle("Title")
.setMessage("Do you really want to whatever?")
.setIcon(android.R.drawable.ic_dialog_alert)
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
Toast.makeText(MainActivity.this...
Why is “using namespace std;” considered bad practice?
... been told by others that writing using namespace std; in code is wrong, and that I should use std::cout and std::cin directly instead.
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Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
10 Answers
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xUnit : Assert two List are equal?
I'm new to TDD and xUnit so I want to test my method that looks something like:
4 Answers
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