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Is cout synchronized/thread-safe?
... @ildjarn - No, @edA-qa mort-ora-y is correct. As long as cout.sync_with_stdio() is true, using cout to output characters from multiple threads without additional synchronization is well-defined, but only on the level of individual bytes. Thus, cout << "ab"; and cout << "cd" exec...
How do I mock a service that returns promise in AngularJS Jasmine unit test?
...ce;
beforeEach(module('app.myService'));
beforeEach(inject( function(_myService_, myOtherService, $q){
myService = _myService_;
spyOn(myOtherService, "makeRemoteCallReturningPromise").and.callFake(function() {
var deferred = $q.defer();
deferred.resolve('Remote call res...
Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
...s ET
# instead of ET.fromstring(xml)
it = ET.iterparse(StringIO(xml))
for _, el in it:
prefix, has_namespace, postfix = el.tag.partition('}')
if has_namespace:
el.tag = postfix # strip all namespaces
root = it.root
This is based on the discussion here:
http://bugs.python.org/issu...
Understanding Canvas and Surface concepts
... and Surface Flinger renders these to the final display in their correct Z-order. A surface typically has more than one buffer (usually two) to do double-buffered rendering: the application can be drawing its next UI state while the surface flinger is compositing the screen using the last buffer, w...
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 ...
How assignment works with Python list slice?
...
Is a[:] = some_list equivalent to a = some_list[:] or a = some_list?
– jadkik94
May 17 '12 at 10:42
2
...
How to get datetime in JavaScript?
...
function pad_2(number)
{
return (number < 10 ? '0' : '') + number;
}
function hours(date)
{
var hours = date.getHours();
if(hours > 12)
return hours - 12; // Substract 12 hours when 13:00 and more
return h...
What are “connecting characters” in Java identifiers?
...rds.
http://www.fileformat.info/info/unicode/category/Pc/list.htm
U+005F _ LOW LINE
U+203F ‿ UNDERTIE
U+2040 ⁀ CHARACTER TIE
U+2054 ⁔ INVERTED UNDERTIE
U+FE33 ︳ PRESENTATION FORM FOR VERTICAL LOW LINE
U+FE34 ︴ PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
U+FE4D ﹍ DASHED LOW LINE
U+FE4E...
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...
Why Large Object Heap and why do we care?
...nt. The cache is a really big deal on modern processors, they are an easy order of magnitude faster than the memory bus.
Compacting is done simply by copying bytes. That however takes time. The larger the object, the more likely that the cost of copying it outweighs the possible CPU cache usage ...