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What's the difference between the atomic and nonatomic attributes?
... answered May 25 '12 at 10:56
raw3draw3d
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performSelector may cause a leak because its selector is unknown
.... In Objective-C, developers are able to do this by using C style casts on raw function pointers.
With the introduction of Swift, Apple has documented the performSelector: family of methods as "inherently unsafe" and they are not available to Swift.
Over time, we have seen this progression:
Earl...
Best approach to real time http streaming to HTML5 video client
...ith that). MP4 is broken into two pieces: moov and mdat. mdat contains the raw audio video data. But it is not indexed, so without the moov, it is useless. The moov contains an index of all data in the mdat. But due to its format, it can not be 'flattened' until the timestamps and size of EVERY fram...
How to index characters in a Golang string?
...ay reconvert the string on each iteration for, O(n²). Just do for _, r := range word { fmt.Printf("%c", r) }. If you really wanted to loop with an index for x := 0; x < limit; x++. Please learn the basics of a language before answering questions.
– Dave C
A...
What's the difference between “groups” and “captures” in .NET regular expressions?
...am|pm)").
> Groups.Cast<Group>().
> Zip(Enumerable.Range(0, int.MaxValue), (g, n) => "[" + n + "] " + g);
{ "[0] 3:10pm", "[1] 3", "[2] 3", "[3] 10", "[4] 0", "[5] pm" }
So where's the 1?
Since there are multiple digits that match on the fourth group, we only "get at" ...
Delete the first three rows of a dataframe in pandas
... works but returns duplicate columns in the index df=pd.DataFrame({'v':np.arange(10).tolist()*2,'g':['a']*10+['b']*10});df.groupby('g').apply(lambda x: x.iloc[3:])
– citynorman
Aug 6 '17 at 22:24
...
How to enable local network users to access my WAMP sites?
...lt;/Directory>
Now assuming your local network subnet uses the address range 192.168.0.?
Add this line after Allow from localhost
Allow from 192.168.0
This will tell Apache that it is allowed to be accessed from any ip address on that subnet.
Of course you will need to check that your router is...
Replacing all non-alphanumeric characters with empty strings
...e that [^a-zA-Z] will replace characters not being itself in the character range A-Z/a-z. That means special characters like é, ß etc. or cyrillic characters and such will be removed.
If the replacement of these characters is not wanted use pre-defined character classes instead:
str.replaceAl...
List to array conversion to use ravel() function
...
create an int array and a list
from array import array
listA = list(range(0,50))
for item in listA:
print(item)
arrayA = array("i", listA)
for item in arrayA:
print(item)
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imp...
Flags to enable thorough and verbose g++ warnings
...something that I consider an error. For
instance, it triggers when using a range-based for loop on a vector
of classes. Return value optimization should take care of any
negative effects of this.
-Wconversion triggers on this code: short n = 0; n += 2; The
implicit conversion to int causes a warning...