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What is the use of having destructor as private?
...
Basically, any time you want some other class to be responsible for the life cycle of your class' objects, or you have reason to prevent the destruction of an object, you can make the destructor private.
For instance, if you're doing some sort of reference counting thing, you can have the object ...
Rails Root directory path?
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In Rails 3 and newer:
Rails.root
which returns a Pathname object. If you want a string you have to add .to_s. If you want another path in your Rails app, you can use join like this:
Rails.root.join('app', 'assets', 'images', 'logo.png')
In Rails 2 you can use the RAILS_ROOT constant, whi...
Remove a string from the beginning of a string
... form, without regex:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
if (substr($str, 0, strlen($prefix)) == $prefix) {
$str = substr($str, strlen($prefix));
}
Takes: 0.0369 ms (0.000,036,954 seconds)
And with:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
$str = preg_replace('/^...
Check whether a request is GET or POST [duplicate]
...
Better use $_SERVER['REQUEST_METHOD']:
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
// …
}
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VS Addin插件基本开发入门 - C/C++ - 清泛网 - 专注C/C++及内核技术
...全局变量：Window myToolWindow = null;
OnConnection函数：
else if (connectMode == ext_ConnectMode.ext_cm_AfterStartup)
{
const string TOOLWINDOW_GUID = "{6CCD0EE9-20DB-4636-9149-665A958D8A9A}";
object myUserControlObject = null;
...
How do I find files with a path length greater than 260 characters in Windows?
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dir /s /b > out.txt does the job beautifully. Thanks. "'Get-ChildItem' is not recognized as an internal or external command, operable program or batch file." I guess I don't have powershell.
– WestHamster
Oct 3 '12 at 20:3...
Unable to execute dex: GC overhead limit exceeded in Eclipse
...az It depends on your OS and whether you're using a 32-bit or 64-bit JVM. If you're on a 64 bit JVM, you can safely set it to anything smaller than your RAM size minus overhead for OS/other applications. On a 32 bit VM, you'll want to keep it smaller than about 1500M (on Linux) or 1100M (on Window...
Constants in Objective-C
...ySecondConstant;
//etc.
(you can use extern instead of FOUNDATION_EXPORT if your code will not be used in mixed C/C++ environments or on other platforms)
You can include this file in each file that uses the constants or in the pre-compiled header for the project.
You define these constants in a...
Linq to Sql: Multiple left outer joins
... dc.Vendors
.Where(v => v.Id == order.VendorId)
.DefaultIfEmpty()
from status
in dc.Status
.Where(s => s.Id == order.StatusId)
.DefaultIfEmpty()
select new { Order = order, Vendor = vendor, Status = status }
//Vendor and Status properties will ...
Get a random boolean in python?
...ite fast, but I found that random.getrandbits(1) to be quite a lot faster. If you really want a boolean instead of a long then
bool(random.getrandbits(1))
is still about twice as fast as random.choice([True, False])
Both solutions need to import random
If utmost speed isn't to priority then ran...