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App日志及内置WebView的调试方法 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
1、进入mumu模拟器/手机
2、进入设置-关于手机，连续点击版本号进入开发者模式；
3、进入设置-系统-开发者选项；
4、启用USB调试，允许使用ADB与模拟器通信；
5、打开命令行，通过以下adb命令连接模拟器：（手机的话...
ClickTools 拓展：为布局、标签等没有点击事件的组件添加点击事件 - App In...
Blocks[size=15.008px]
[size=15.008px][color=var(--tertiary)][color=var(--secondary)]blocks (2)[color=var(--secondary-high)]499×533 28.5 KB
Documentation -
component ~ component
id ~ int (number)
id ~ id you used for your registered component
Use this event to set blocks of component cli...
How to log a method's execution time exactly in milliseconds?
....
const uint64_t elapsedMTU = endTime - startTime;
// Get information for converting from MTU to nanoseconds
mach_timebase_info_data_t info;
if (mach_timebase_info(&info))
handleErrorConditionIfYoureBeingCareful();
// Get elapsed time in nanoseconds:
const double elapsedNS = (double)elapsed...
What is a “surrogate pair” in Java?
... does not support UTF-32
"????".equals("\u1F309") // false
3. You can convert Unicode character to Java String
"????".equals(new String(Character.toChars(0x0001F309))) //true
4. String.substring() does not consider supplementary characters
"????????".substring(0,1) //"?"
"????????".substri...
Editing dictionary values in a foreach loop
...t the for loop: it's copying the list of keys. (It would still work if you converted it to a foreach loop.) Solving by using a for loop would mean using colStates.Keys in place of keys.
– idbrii
Mar 27 '19 at 16:26
...
string to string array conversion in java
I have a string = "name";
I want to convert into a string array.
How do I do it?
Is there any java built in function? Manually I can do it but I'm searching for a java built in function.
...
Swift - Cast Int into enum:Int
...er has changed. Earlier version of Swift use the class method fromRaw() to convert raw values to enumerated values.
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Efficient way to determine number of digits in an integer
...fectly precise unless specified on the compiler command line. some will be converted to x86 intrinsics at compile time. some don't exist and will expand into formulas of existing intrinsics. for example if using -fpfast you could see usage of SSE instrinsics rather than x87, which yields less guaran...
Remove unwanted parts from strings in a column
...2
3 11:00 44
4 12:00 30
5 13:00 110
If you need the result converted to an integer, you can use Series.astype,
df['result'] = df['result'].str.replace(r'\D', '').astype(int)
df.dtypes
time object
result int64
dtype: object
If you don't want to modify df in-place, use Dat...
Flatten an Array of Arrays in Swift
... as it returns a lazy collection instead of a new array, but can always be converted to an array when passed to Array() initialiser like in the example above.
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