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How can I add an ampersand for a value in a ASP.net/C# app config file value
...eed to call Html.Raw in your .cshtml file to prevent it from being escaped by the framework.
– user700390
May 21 at 17:51
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What does new self(); mean in PHP?
...onnector handlers. From client code, accessing that instance would be done by creating a single access point, in this case he named it getInstance(), The getInstance in itself was the function that created the the object basically using the new keyword to create an object meaning the constructor met...
Why is Multiple Inheritance not allowed in Java or C#?
...s just say, multiple inheritance is not allowed. But it can be implemented by using interfaces. Nothing is discussed about why it is not allowed. Can anybody tell me precisely why it is not allowed?
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iOS: Access app-info.plist variables in code
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Attributes from the info.plist for your project are directly accessible by the following...
[[NSBundle mainBundle] objectForInfoDictionaryKey:key_name];
For example to get the version number you might do the following
NSString *appVersion = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"...
Change the name of the :id parameter in Routing resources for Rails
...ram: :slug
# app/controllers/posts_controller.rb
# ...
@post = Post.find_by(slug: params[:slug])
# ...
As of the release of Rails 4, this functionality is documented in the Rails Guides.
Rails 3
Unfortunately, in Rails 3, the :key option for resources was removed, so you can no longer easily c...
When to use virtual destructors?
... pointer, you can make the base class destructor protected and nonvirtual; by doing so, the compiler won't let you call delete on a base class pointer.
You can learn more about virtuality and virtual base class destructor in this article from Herb Sutter.
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What is Python buffer type for?
...be necessary when using large amounts of data. This example uses a mutable bytearray:
>>> s = bytearray(1000000) # a million zeroed bytes
>>> t = buffer(s, 1) # slice cuts off the first byte
>>> s[1] = 5 # set the second element in s
>>>...
':app:lintVitalRelease' error when generating signed apk
... yes it's very annoying when it says fix the issues identified by lint but doesn't actually shows those errors or path to report...
– user25
May 28 '18 at 20:17
7
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What's better at freeing memory with PHP: unset() or $var = null
...iate memory freeing. PHP's garbage collector will do it when it see fits - by intention as soon, as those CPU cycles aren't needed anyway, or as late as before the script would run out of memory, whatever occurs first.
If you are doing $whatever = null; then you are rewriting variable's data. You mi...
Purpose of Trigraph sequences in C++?
...endum:
It looks like GCC will not process (and will warn about) trigraphs by default. Some other compilers have options to turn off trigraph support (IBM's for example). Microsoft started supporting a warning (C4837) in VS2008 that must be explicitly enabled (using -Wall or something).
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