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Using Auto Layout in UITableView for dynamic cell layouts & variable row heights
...reuseIdentifier];
if (!cell) {
cell = [[YourTableViewCellClass alloc] init];
[self.offscreenCells setObject:cell forKey:reuseIdentifier];
}
// Configure the cell with content for the given indexPath, for example:
// cell.textLabel.text = someTextForThisCell;
// ....
Further understanding setRetainInstance(true)
....MyActivity@405196b0
09-29 13:23:04.851: DEBUG/dalvikvm(4790): GC_EXTERNAL_ALLOC freed 49K, 51% free 2686K/5379K, external 0K/0K, paused 45ms
09-29 13:23:04.881: INFO/TESTING - MYACTIVITY(4790): onCreate - com.example.MyActivity@405196b0
09-29 13:23:04.881: INFO/TESTING - MYACTIVITY(4790): onStart -...
【HarmonyOS】真机测试ble - HarmonyOS NEXT - 清泛IT社区，为创新赋能！
[2:01:15 PM] YAIL[254]: (begin (require <com.google.youngandroid.runtime>) (process-repl-input "P:)R:yv~...
[2:01:15 PM] → SimpleYail 执行
[2:01:15 PM] [YAIL] 解析 YAIL (244 chars)
[2:01:15 PM] [YAIL] 解析得到 1 个顶层表达式
[2:01:15 PM] [YAIL] 执行[0]: (be...
Best way to work with dates in Android SQLite [closed]
...at) {
String finalDateTime = "";
SimpleDateFormat iso8601Format = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
Date date = null;
if (timeToFormat != null) {
try {
date = iso8601Format.parse(timeToFormat);
} catch (ParseException e...
When to use volatile with multi threading?
...er and the first comment. "volatile is useless" is akin to "manual memory allocation is useless". If you can write a multithreaded program without volatile it is because you stood on the shoulders of people who used volatile to implement threading libraries.
– Ben Jackson
...
What are the most common non-BMP Unicode characters in actual use? [closed]
...ere are the top ten trans-ASCII code points in that corpus:
2663710 U+002013 ‹–› GC=Pd EN DASH
1065594 U+0000A0 ‹ › GC=Zs NO-BREAK SPACE
1009762 U+0000B1 ‹±› GC=Sm PLUS-MINUS SIGN
784139 U+002212 ‹−› GC=Sm MINUS SIGN
602377 U+002003 ‹ › GC=Zs E...
Remove accents/diacritics in a string in JavaScript
...
With ES2015/ES6 String.prototype.normalize(),
const str = "Crème Brulée"
str.normalize("NFD").replace(/[\u0300-\u036f]/g, "")
> "Creme Brulee"
Two things are happening here:
normalize()ing to NFD Unicode normal form decomposes...
How to round the minute of a datetime object
...umber of seconds to round to, default 1 minute.
Author: Thierry Husson 2012 - Use it as you want but don't blame me.
"""
if dt == None : dt = datetime.datetime.now()
seconds = (dt.replace(tzinfo=None) - dt.min).seconds
rounding = (seconds+roundTo/2) // roundTo * roundTo
return dt +...
Convert to/from DateTime and Time in Ruby
...r code above, simply replace d = DateTime.now with d = DateTime.new(2010,01,01, 10,00,00, Rational(-2, 24)). tt will now show the date d converted into your local timezone. You can still do date arithmetics and all but the original tz info is lost. This info is a context for the date and it ...
Get the week start date and week end date from week number
...
Robin DayRobin Day
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