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Regular cast vs. static_cast vs. dynamic_cast [duplicate]
...d to cast between
the integer types. 'e.g.' char->long, int->short etc.
Static cast is also used to cast pointers to related types, for
example casting void* to the appropriate type.
dynamic_cast
Dynamic cast is used to convert pointers and references at run-time,
generall...
Drawing Isometric game worlds
...t his feet; tree's base is at it's roots; airplane's base is center-image, etc.) Then I just sort lowest to highest level, then lowest (highest on-screen) to highest base-Y, then lowest (left-most) to highest base-X. This renders the tiles the way one would expect.
Code to convert screen (point) ...
Run PostgreSQL queries from the command line
...l be needed in Query field. So my approach is to write the SQL in separate file and run the SQL file from command line. This has another advantage too. If you have to change the query for a large script you do not need to touch the script file or command. Only change the SQL file like this
psql -h ...
Get Image Height and Width as integer values?
...ERVER["DOCUMENT_ROOT"], this helps sometimes when you are not able to read files.
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How do I remove the passphrase for the SSH key without having to create a new key?
...Short answer:
$ ssh-keygen -p
This will then prompt you to enter the keyfile location, the old passphrase, and the new passphrase (which can be left blank to have no passphrase).
If you would like to do it all on one line without prompts do:
$ ssh-keygen -p [-P old_passphrase] [-N new_passphr...
Best way to build a Plugin system with Java
...rationPage();
}
Plugin authors should then bundle their plugins into JAR files. Your applications opens the JAR file and could then use an attribute from JAR manifest or the list of all files in the JAR file to find the class that implements your Plugin interface. Instantiate that class, the plug...
How to write an async method with out parameter?
...ks the whole purpose of the pattern.
async Task<(bool Success, StorageFile File, Exception exception)> DoAsync(string fileName)
{
try
{
var folder = ApplicationData.Current.LocalCacheFolder;
return (true, await folder.GetFileAsync(fileName), null);
}
catch (Ex...
How to get error message when ifstream open fails
...T_SECURE_NO_WARNINGS. See online help for details. 1> C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\string.h(168) : see declaration of 'strerror'
– sergiol
Jul 13 '18 at 16:22
...
String, StringBuffer, and StringBuilder
...)
.toString()
Or
String s = new StringBuilder(100).appe..... etc. ...
// The difference is a size of 100 will be allocated upfront as fuzzy lollipop points out.
StringBuffer ( the syntax is exactly as with StringBuilder, the effects differ )
About
StringBuffer vs. StringBuilder ...
What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...reading a lot of Javascript lately and I have been noticing that the whole file is wrapped like the following in the .js files to be imported.
...