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How to disable an Android button?
...s because AS/IDEA code completion doesn't suggest android:enabled when you start to type it. (Even to this day.)
– Kevin Krumwiede
Aug 5 '18 at 18:36
2
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When to use Task.Delay, when to use Thread.Sleep?
... you want to run some code before the delay:
var sw = new Stopwatch();
sw.Start();
Task delay = Task.Delay(5000);
Console.WriteLine("async: Running for {0} seconds", sw.Elapsed.TotalSeconds);
await delay;
Guess what this will print? Running for 0.0070048 seconds.
If we move the await delay above ...
Find the day of a week
...way...
The wday component of a POSIXlt object is the numeric weekday (0-6 starting on Sunday).
as.POSIXlt(df$date)$wday
## [1] 3 3 4
which you could use to subset a character vector of weekday names
c("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday")[as.POSIXlt(...
Execute another jar in a Java program
...
The following works by starting the jar with a batch file, in case the program runs as a stand alone:
public static void startExtJarProgram(){
String extJar = Paths.get("C:\\absolute\\path\\to\\batchfile.bat").toString();
ProcessBu...
Remove underline from links in TextView - Android
...gth(), URLSpan.class);
for (URLSpan span: spans) {
int start = s.getSpanStart(span);
int end = s.getSpanEnd(span);
s.removeSpan(span);
span = new URLSpanNoUnderline(span.getURL());
s.setSpan(span, start, end, 0);
}
t...
Creating a new empty branch for a new project
...some documentation. For that we would want to create a new empty branch to start storing our files, and I would want other users of the network to clone that branch.
...
Cannot kill Python script with Ctrl-C
...cess alive. We can make them daemons:
f = FirstThread()
f.daemon = True
f.start()
s = SecondThread()
s.daemon = True
s.start()
But then there's another problem - once the main thread has started your threads, there's nothing else for it to do. So it exits, and the threads are destroyed instantly....
Pandas every nth row
... For those who might want, for example, every fifth row, but starting at the 2nd row it would be df.iloc[1::5, :].
– Little Bobby Tables
Nov 13 '16 at 17:18
17
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How do I match any character across multiple lines in a regular expression?
...!d;x; slurps the file into memory). If whole lines must be included, sed '/start_pattern/,/end_pattern/d' file (removing from start will end with matched lines included) or sed '/start_pattern/,/end_pattern/{{//!d;};}' file (with matching lines excluded) can be considered.
perl - perl -0pe 's/(.*)&l...
Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
...er = new ObjectMapper();
JsonNode rootNode = mapper.readTree(jsonStr);
// Start by checking if this is a list -> the order is important here:
if (rootNode instanceof ArrayNode) {
// Read the json as a list:
myObjClass[] objects = mapper.readValue(rootNode.toString()...