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Literal notation for Dictionary in C#?
...like your code):
var data = new Dictionary<string, string>
{
{ "test", "val" },
{ "test2", "val2" }
};
In C# 6, you now have the option of using a more intuitive syntax with Dictionary as well as any other type that supports indexers. The above statement can be rewritten as:
var d...
Simple logical operators in Bash
...ditional expressions are mostly built on operators such as -n $variable to test if a variable is empty and -e $file to test if a file exists. There are also string equality operators: "$string1" == "$string2" (beware that the right-hand side is a pattern, e.g. [[ $foo == a* ]] tests if $foo starts w...
Automatic Retina images for web sites
...niques - but probably no best practice, yet.
One thing I wonder is how to test and debug some of these techniques, without having the respective device(s) available...
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How to create a new database using SQLAlchemy?
...per PostgreSQL command for it.
>>> conn.execute("create database test")
>>> conn.close()
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Why does Assert.AreEqual(T obj1, Tobj2) fail with identical byte arrays
...
Assert.Equals tests using the Equals method, which by default uses reference equality and, since they are different objects, they are not equal. You'll want to compare each byte in the array and verify that they are equal. One way to do ...
mysql_config not found when installing mysqldb python interface
...ds the command 'mysql_config', so you need to install that first.
Can you confirm that you did or did not install mysql itself, by running "mysql" from the shell? That should give you a response other than "mysql: command not found".
Which linux distribution are you using? Mysql is pre-packaged f...
What is “rvalue reference for *this”?
... parameter" of the function†:
// t.cpp
#include <iostream>
struct test{
void f() &{ std::cout << "lvalue object\n"; }
void f() &&{ std::cout << "rvalue object\n"; }
};
int main(){
test t;
t.f(); // lvalue
test().f(); // rvalue
}
Output:
$ clang++ -std=c++...
Git SSH error: “Connect to host: Bad file number”
...age is indeed generic, as it can happen on "Connection refused" also. This confirms the analysis.
Please don't clutter this question with general hints and answer, they have nothing to do with the actual topic (and title) of this question which is "Git SSH error: “Connect to host: Bad file number...
Can you attach a UIGestureRecognizer to multiple views?
...
Can someone else confirm that this no longer works in the current version of Obj-C / Swift?
– Maxi Mus
Apr 12 '16 at 11:05
...
Is it possible to have empty RequestParam values use the defaultValue?
...to your default value in the controller method:
@RequestMapping(value = "/test", method = RequestMethod.POST)
@ResponseBody
public void test(@RequestParam(value = "i", required=false) Integer i) {
if(i == null) {
i = 10;
}
// ...
}
I have removed the defaultValue from the exam...