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Finding the type of an object in C++
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dynamic_cast should do the trick
TYPE& dynamic_cast<TYPE&> (object);
TYPE* dynamic_cast<TYPE*> (object);
The dynamic_cast keyword casts a datum from one pointer or reference type to another, performing a runtime check to ens...
How do you disable viewport zooming on Mobile Safari?
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Your code is displaying attribute double quotes as fancy double quotes. If the fancy quotes are present in your actual source code I would guess that is the problem.
This works for me on Mobile Safari in iOS 4.2.
<meta name="viewport" content="width=devi...
Parsing JSON with Unix tools
...SON from the command line, and will be a lot easier and more reliable than doing it with Awk, such as jq:
curl -s 'https://api.github.com/users/lambda' | jq -r '.name'
You can also do this with tools that are likely already installed on your system, like Python using the json module, and so avoid...
Best way to add “current” class to nav in Rails 3
...ion_name instead of params probably
– Francesco Belladonna
Aug 20 '14 at 16:35
Well done. I did not think of keeping t...
Android get free size of internal/external memory
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Solution not working when i do format as internal storage ... can you please me , how to do achieve this
– Yogesh Rathi
Jun 19 '19 at 8:09
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Only using @JsonIgnore during serialization, but not deserialization
...ct that is sent to and from the server. When I send out the user object, I don't want to send the hashed password to the client. So, I added @JsonIgnore on the password property, but this also blocks it from being deserialized into the password that makes it hard to sign up users when they ain't g...
Is cout synchronized/thread-safe?
...eneral I assume that streams are not synchronized, it is up to the user to do appropriate locking. However, do things like cout get special treatment in the standard library?
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What is a mixin, and why are they useful?
...rts accept headers, etags, authentication, and user agent support, I could do this:
from werkzeug import BaseRequest, AcceptMixin, ETagRequestMixin, UserAgentMixin, AuthenticationMixin
class Request(AcceptMixin, ETagRequestMixin, UserAgentMixin, AuthenticationMixin, BaseRequest):
pass
The di...
What is the difference between encrypting and signing in asymmetric encryption?
... be the sender.
I want my public key to be used to read the messages and I do not care who reads them
This is signing, it is done with your private key.
I want to be able to encrypt certain information and use it as a product key for my software.
I only care that I am the only one who can generate...
Check if a variable is of function type
...s. Are there technical issues or problems that can arise when using it to do type checking, or is it more of a preference? If there are caveats it would be good to list them so others can avoid tripping over them.
– jinglesthula
Jan 15 '14 at 19:07
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