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How to avoid annoying error “declared and not used”
..., if you really want to skip this error, you can use the blank identifier (_) :
package main
import (
"fmt" // imported and not used: "fmt"
)
func main() {
i := 1 // i declared and not used
}
becomes
package main
import (
_ "fmt" // no more error
)
func main() {
i := 1 // no ...
Performance of Find() vs. FirstOrDefault() [duplicate]
...ject an anonmyous data item just for compilation
List<\u003C\u003Ef__AnonymousType0<string>> source = Enumerable.ToList(Enumerable.Select(Enumerable.Range(0, 1000000), i =>
{
var local_0 = new
{
Name = Guid.NewGuid().ToString()
};
return local_...
jQuery $(document).ready and UpdatePanels?
...ents() {
$(document).ready(function() {
$(".tr-base").mouseover(function() {
$(this).toggleClass("trHover");
}).mouseout(function() {
$(this).removeClass("trHover");
});
}
</script>
T...
Extension methods cannot be dynamically dispatched
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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RESTful Authentication
...d software architecture.
HTTP basic auth over HTTPS
This first solution, based on the standard HTTPS protocol, is used by most web services.
GET /spec.html HTTP/1.1
Host: www.example.org
Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
It's easy to implement, available by default on all browse...
Dictionaries and default values
...collections import defaultdict
a = defaultdict(lambda: "default", key="some_value")
a["blabla"] => "default"
a["key"] => "some_value"
You can pass any ordinary function instead of lambda:
from collections import defaultdict
def a():
return 4
b = defaultdict(a, key="some_value")
b['absent...
How to correctly use the extern keyword in C
...ction prototypes:
//--------------------------------------
//Filename: "my_project.H"
extern int function_1(void);
static int function_2(void);
int function_3(void);
The header file can be used by the main source code as follows:
//--------------------------------------
//Filename: "my_pr...
Does Python support short-circuiting?
...ent, but you could also state things very succinctly:
In [171]: name = raw_input('Enter Name: ') or '<Unkown>'
Enter Name:
In [172]: name
Out[172]: '<Unkown>'
In other words, if the return value from raw_input is true (not an empty string), it is assigned to name (nothing changes); ...
Calculate difference in keys contained in two Python dictionaries
...nged values
(4) keys same in both and unchanged values
"""
def __init__(self, current_dict, past_dict):
self.current_dict, self.past_dict = current_dict, past_dict
self.set_current, self.set_past = set(current_dict.keys()), set(past_dict.keys())
self.intersect = s...
What's the difference between a mock & stub?
...me shortcut which makes them not suitable for production (an in memory database is a good example).
Stubs provide canned answers to calls made during the test, usually not responding at all to anything outside what's programmed in for the test. Stubs may also record information about calls, such a...