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C# code to validate email address
...e-mail addresses are more forgiving than you might first assume. These are all perfectly valid forms:
cog@wheel
"cogwheel the orange"@example.com
123@$.xyz
For most use cases, a false "invalid" is much worse for your users and future proofing than a false "valid". Here's an article that used to ...
How do you write a migration to rename an ActiveRecord model and its table in Rails?
...ble_name
end
end
I had to go and rename the model declaration file manually.
Edit:
In Rails 3.1 & 4, ActiveRecord::Migration::CommandRecorder knows how to reverse rename_table migrations, so you can do this:
class RenameOldTableToNewTable < ActiveRecord::Migration
def change
rena...
Is the size of C “int” 2 bytes or 4 bytes?
...
I know it's equal to sizeof(int). The size of an int is really compiler dependent. Back in the day, when processors were 16 bit, an int was 2 bytes. Nowadays, it's most often 4 bytes on a 32-bit as well as 64-bit systems.
Still, using sizeof(int) is the best way to get the size of...
Capitalize or change case of an NSString in Objective-C
...e caps ➔ (method missing; see workaround below)
Hence what you want is called "uppercase", not "capitalized". ;)
As for "Sentence Caps" one has to keep in mind that usually "Sentence" means "entire string". If you wish for real sentences use the second method, below, otherwise the first:
@inter...
How get integer value from a enum in Rails?
...ork if the model has not been saved. The sale_info_before_type_cast value (and my_model[:sale_info]) is still a string if it my_model.sale_info has been assigned a string without a subsequent save.
– Tim Smith
Oct 9 '16 at 5:49
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为iFrame添加动态载入效果，提高用户体验 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ng="no"></iframe>
<script language="javascript">
function stateChangeIE(_frame)
{
if (_frame.readyState=="interactive")
{
var loader = document.getElementById("loading");
loader.innerHTML = "";
loader.style.display = "none";
_fra...
How to use dashes in HTML-5 data-* attributes in ASP.NET MVC
...ng to use HTML5 data- attributes in my ASP.NET MVC 1 project. (I am a C# and ASP.NET MVC newbie.)
8 Answers
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Using CookieContainer with WebClient class
... limited functionalty. Before I knew about this option, I wrote lots of really painful code at the HttpWebRequest layer because WebClient almost, but not quite, did what I needed. Derivation is much easier.
Another option is to use the regular WebClient class, but manually populate the Cookie he...
How do I ignore ampersands in a SQL script running from SQL Plus?
...ave a SQL script that creates a package with a comment containing an ampersand (&). When I run the script from SQL Plus, I am prompted to enter a substitute value for the string starting with &. How do I disable this feature so that SQL Plus ignores the ampersand?
...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
I've been usually installed python packages through pip.
8 Answers
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