大约有 4,000 项符合查询结果（耗时：0.0230秒） [XML]
detach all packages while working in R
...()). However these typically are fraught with errors and could break basic functionality such as causing sessionInfo() to return only errors. This typically occurs because of a lack of reversibility in the original package's design. Currently timeDate can break irreversibly, for example.
(edit: 9/24...
Best practices for overriding isEqual: and hash
...
The hash function should create a semi-unique value that is not likely to collide or match another object's hash value.
Here is the full hash function, which can be adapted to your classes instance variables. It uses NSUInteger's rath...
Access mysql remote database from command line
...rant 'root'@'%' this is a huge security no no!
– josh123a123
Apr 27 '15 at 14:57
1
...
runOnUiThread in fragment
...
Use a Kotlin extension function
fun Fragment?.runOnUiThread(action: () -> Unit) {
this ?: return
if (!isAdded) return // Fragment not attached to an Activity
activity?.runOnUiThread(action)
}
Then, in any Fragment you can just cal...
Sort Dictionary by keys
...as worked for me:
let dicNumArray = ["q":[1,2,3,4,5],"a":[2,3,4,5,5],"s":[123,123,132,43,4],"t":[00,88,66,542,321]]
let sortedDic = dicNumArray.sorted { (aDic, bDic) -> Bool in
return aDic.key < bDic.key
}
share...
disable the swipe gesture that opens the navigation drawer in android
...orrect one. I think LOCK_MODE_LOCKED_CLOSED worked in Compat 24.x, but the functionality has been changed in newer compat libraries and LOCK_MODE_LOCKED_CLOSED now completely prevents the nav menu from showing, even via using the hamburger menu.
The following class works for me (Kotlin):
class MyD...
Http Basic Authentication in Java using HttpClient?
... for some reason, it does NOT work in some cloud environment (sae.sina.com.cn if you want to know, it is a chinese cloud service). so have to use the http header instead of HttpClient credentials.
public static void main(String[] args) {
try {
DefaultHttpClient Client = new DefaultHttp...
Find and extract a number from a string
...
go through the string and use Char.IsDigit
string a = "str123";
string b = string.Empty;
int val;
for (int i=0; i< a.Length; i++)
{
if (Char.IsDigit(a[i]))
b += a[i];
}
if (b.Length>0)
val = int.Parse(b);
...
Career day in kindergarten: how to demonstrate programming in 20 minutes? [closed]
...ter though, which by its look may be a 486, and I am not even sure if it's functioning (Update: it isn't).
18 Answers
...
Assignment inside lambda expression in Python
... [__import__('math')]
for sub in [lambda *vals: None]
for fun in [lambda *vals: vals[-1]]
for echo in [lambda *vals: sub(
sys.stdout.write(u" ".join(map(unicode, vals)) + u"\n"))]
for Cylinder in [type('Cylinder', (object,), dict(
__init__ =...