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Replace a string in shell script using a variable
...x> echo X123456789X | sed "s/123456789/${replace}/"
X987654321X
pax> _
Just be careful to ensure that ${replace} doesn't have any characters of significance to sed (like / for instance) since it will cause confusion unless escaped. But if, as you say, you're replacing one number with another...
Creating a constant Dictionary in C#
...s SomeClass
{
static readonly ReadOnlyDictionary<string,int> SOME_MAPPING
= new ReadOnlyDictionary<string,int>(
new Dictionary<string,int>()
{
{ "One", 1 },
{ "Two", 2 }
}
)
}
...
Getting the folder name from a path
...red Aug 14 '17 at 18:11
susieloo_susieloo_
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How to find day of week in php in a specific timezone
...
Another quick way:
date_default_timezone_set($userTimezone);
echo date("l");
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Split list into smaller lists (split in half)
...6]
B = A[:len(A)//2]
C = A[len(A)//2:]
If you want a function:
def split_list(a_list):
half = len(a_list)//2
return a_list[:half], a_list[half:]
A = [1,2,3,4,5,6]
B, C = split_list(A)
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视觉AI（HarmonyVisionAI）使用指导 · App Inventor 2 中文网
...误信息
}
案例二：物体检测
when 按钮_物体.Click() {
HarmonyVisionAI1.DetectObjects("objects.jpg")
}
when HarmonyVisionAI1.ObjectsDetected(结果JSON) {
标签1.Text = 结果JSON
}
参数与返回值速查
JSON 参数是文本，...
month name to month number and vice versa in python
...calendar module:
import calendar
{v: k for k,v in enumerate(calendar.month_abbr)}
Before Python (2.7+) you would do
dict((v,k) for k,v in enumerate(calendar.month_abbr))
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Adding header for HttpURLConnection
...oder().encodeToString((username+":"+password).getBytes(StandardCharsets.UTF_8));
httpConn.setRequestProperty ("Authorization", "Basic "+basicAuth);
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How to flip UIImage horizontally?
...anymore, at least with camera taken pictures...
– Oni_01
Jun 25 '19 at 14:22
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Switching to a TabBar tab view programmatically?
...
Like Stuart Clark's solution but for Swift 3:
func setTab<T>(_ myClass: T.Type) {
var i: Int = 0
if let controllers = self.tabBarController?.viewControllers {
for controller in controllers {
if let nav = controller as? UINavigationController, nav.topViewCont...