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What is the Swift equivalent to Objective-C's “@synchronized”?
...d on some of the code I've seen from Matt Bridges and others.
func synced(_ lock: Any, closure: () -> ()) {
objc_sync_enter(lock)
closure()
objc_sync_exit(lock)
}
Usage is pretty straight forward
synced(self) {
println("This is a synchronized closure")
}
There is one problem...
How to get notified about changes of the history via history.pushState?
...late the whole code into an IIFE: en.wikipedia.org/wiki/Immediately-invoked_function_expression
– gblazex
Nov 16 '13 at 14:55
|
show 15 more...
How do I print the type of a variable in Rust?
...p.
For example, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = x; would work too
error[E0308]: mismatched types
--> src/main.rs:2:29
|
2 | let mut my_number: () = 32.90;
| ^^^^^ expected (), found floating-point n...
Python's json module, converts int dictionary keys to strings
...on they must be immutable types, or they must be objects which implement a __hash__ method. (The Lua docs suggest that it automatically uses the object's ID as a hash/key even for mutable objects and relies on string interning to ensure that equivalent strings map to the same objects).
In Perl, J...
How can I restore the MySQL root user’s full privileges?
...ue the following commands in the mysql client:
UPDATE mysql.user SET Grant_priv='Y', Super_priv='Y' WHERE User='root';
FLUSH PRIVILEGES;
After that, you should be able to run GRANT ALL ON *.* TO 'root'@'localhost'; and have it work.
...
Can you supply arguments to the map(&:method) syntax in Ruby?
... the shorthand block:
[['0', '1'], ['2', '3']].map(&:map.with(&:to_i))
# => [[0, 1], [2, 3]]
[%w(a b), %w(c d)].map(&:inject.with(&:+))
# => ["ab", "cd"]
[(1..5), (6..10)].map(&:map.with(&:*.with(2)))
# => [[2, 4, 6, 8, 10], [12, 14, 16, 18, 20]]
Here is a conve...
How to migrate back from initial migration in Django 1.7?
...ocs.djangoproject.com/en/1.7/ref/django-admin/…
– n__o
Jul 31 '15 at 5:50
@n__o Thanks. Updated answer.
...
How can you get the Manifest Version number from the App's (Layout) XML variables?
...
Add BuildConfig.VERSION_NAME to your answer for gradle fokes.
– jobbert
Nov 10 '16 at 9:47
add a comment
...
Using 'return' in a Ruby block
...; }
LocalJumpError: unexpected return
from (irb):7:in `block in irb_binding'
from (irb):2:in `call'
from (irb):2:in `thing'
from (irb):6
from /home/mirko/.rvm/rubies/ruby-1.9.1-p378/bin/irb:15:in `<main>'
irb(main):009:0> thing { break 6 * 7 }
=> 4...
Using pickle.dump - TypeError: must be str, not bytes
..., that's why you are here.
import pickle
class MyUser(object):
def __init__(self,name):
self.name = name
user = MyUser('Peter')
print("Before serialization: ")
print(user.name)
print("------------")
serialized = pickle.dumps(user)
filename = 'serialized.native'
with open(filename,...