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Java Generics: Cannot cast List to List? [duplicate]
... tried a standalone Java class that had: 1. List x = new ArrayList<String>(); 2. List<Object> x = new ArrayList<String>(); #1 compiles fine but #2 gives an error: incompatible types found : java.util.ArrayList<java.lang.String> required: java.util.List<java.lan...
Difference between std::system_clock and std::steady_clock?
...throw std::logic_error("QueryPerformanceCounter not supported: " + std::to_string(GetLastError()));
}
};
For Linux it is even easier. Just read the man page of clock_gettime and modify the code above.
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How to connect to LocalDB in Visual Studio Server Explorer?
...aldb) or cannot find any provider in Server Explorer to accept connection string like (localdb)\v11.0;Integrated Security=true; I've seen this asked several places in StackOverflow but no answer works or marked as answer. Please help, this doesn't have to be this frustrating!
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Finding what methods a Python object has
...lp(dir) output on your Python Shell:
dir(...)
dir([object]) -> list of strings
If called without an argument, return the names in the current scope.
Else, return an alphabetized list of names comprising (some of) the attributes of the given object, and of attributes reachable from it.
If the ...
CHECK constraint in MySQL is not working
...e just ignored.
There is a simple alternative
You can create BEFORE INSERT and BEFORE UPDATE triggers which either cause an error or set the field to its default value when the requirements of the data are not met.
Example for BEFORE INSERT working after MySQL 5.5
DELIMITER $$
CREATE TRIGGER `test_b...
Show an image preview before upload
...at let the user interact with files locally; That means you can load files and render them in the browser without actually having to upload the files. Part of the File API is the FileReader interface which lets web applications asynchronously read the contents of files .
Here's a quick example that...
How can I escape white space in a bash loop list?
...doesn't contain the space character. Turn off globbing (set -f) to prevent strings containing glob characters such as [], * or ? from being expanded:
# this is unsafe (but less unsafe than it would be without the following precautions)
(
IFS=$'\n' # split only on newlines
set -f # disable glob...
If threads share the same PID, how can they be identified?
...though it would possibly make more sense to call this a TID, or thread ID) and they also have a TGID (thread group ID) which is the PID of the thread that started the whole process.
Simplistically, when a new process is created, it appears as a thread where both the PID and TGID are the same (new) ...
Change default text in input type=“file”?
...
Each browser has it's own rendition of the control and as such you can't change either the text or the orientation of the control.
There are some "kind of" hacks you may want to try if you want an html/css solution rather than a Flash or silverlightsolution.
http://www.quir...
How do shift operators work in Java? [duplicate]
...
System.out.println(Integer.toBinaryString(2 << 11));
Shifts binary 2(10) by 11 times to the left. Hence: 1000000000000
System.out.println(Integer.toBinaryString(2 << 22));
Shifts binary 2(10) by 22 times to the left. Hence : 1000000000000000...