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Encoding as Base64 in Java
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Use Java 8's never-too-late-to-join-in-the-fun class: java.util.Base64
new String(Base64.getEncoder().encode(bytes));
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Fastest sort of fixed length 6 int array
...static int seed = 76521;
while (n--) *a++ = (seed = seed *1812433253 + 12345);
}
#define NTESTS 4096
int main() {
int i;
int d[6*NTESTS];
ran_fill(6*NTESTS, d);
unsigned long long cycles = rdtsc();
for (i = 0; i < 6*NTESTS ; i+=6) {
sort6_fast(d+i);
}
cyc...
How to clear the cache in NetBeans
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and the fun starts once netbeans doesn't want to open. how then to find out user directory?
– chao
Jun 26 '18 at 11:35
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Ruby off the rails
...g. I was using Python+numpy but when doing artsy stuff, Ruby is just more fun. Also the relative lack of, or lesser maturity of, good image processing libraries makes me feel less like i'm reinventing wheels. I am clueless about Rails, other than i've heard of it, have a fuzzy idea what it is, an...
Read values into a shell variable from a pipe
...s:
echo "hello world" | { read test; echo test=$test; }
or even write a function like this:
read_from_pipe() { read "$@" <&0; }
But there's no point - your variable assignments may not last! A pipeline may spawn a subshell, where the environment is inherited by value, not by reference. ...
Graphviz: How to go from .dot to a graph?
...standard) ...
Pick your .dot file.
You can zoom in, export, all kinds of fun stuff.
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How set maximum date in datepicker dialog in android?
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Here's a Kotlin extension function:
fun EditText.transformIntoDatePicker(context: Context, format: String, maxDate: Date? = null) {
isFocusableInTouchMode = false
isClickable = true
isFocusable = false
val myCalendar = Calendar.getIn...
How to have an automatic timestamp in SQLite?
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Reading datefunc a working example of automatic datetime completion would be:
sqlite> CREATE TABLE 'test' (
...> 'id' INTEGER PRIMARY KEY,
...> 'dt1' DATETIME NOT NULL DEFAULT (datetime(CURRENT_TIMESTAMP, 'localtim...
What are the differences between “=” and “
...lifies the issue by prohibiting the "=" for assignment. Not a bad choice.
https://google.github.io/styleguide/Rguide.xml
The R manual goes into nice detail on all 5 assignment operators.
http://stat.ethz.ch/R-manual/R-patched/library/base/html/assignOps.html
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MySQL pagination without double-querying?
...determine whether there are additional rows."
I guess that settles that.
https://dev.mysql.com/doc/refman/8.0/en/information-functions.html#function_found-rows
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