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Sort Go map values by keys
...as input
m := make(map[int]string)
m[1] = "a"
m[2] = "c"
m[0] = "b"
// To store the keys in slice in sorted order
keys := make([]int, len(m))
i := 0
for k := range m {
keys[i] = k
i++
}
sort.Ints(keys)
// To perform the opertion you want
...
Count how many files in directory PHP
... |
edited Oct 9 '12 at 14:07
answered Oct 9 '12 at 14:01
Ba...
Why does Date.parse give incorrect results?
Fri Jul 08 2005 00:00:00 GMT-0700 (PST)
11 Answers
11
...
Map function in MATLAB?
... map function does for numeric arrays:
>> y = arrayfun(@(x) x^2, 1:10)
y =
1 4 9 16 25 36 49 64 81 100
There are two other built-in functions that behave similarly: cellfun (which operates on elements of cell arrays) and structfun (which operates on each fi...
Convert to/from DateTime and Time in Ruby
...ds into a fractional number of seconds
seconds = sec + Rational(usec, 10**6)
# Convert a UTC offset measured in minutes to one measured in a
# fraction of a day.
offset = Rational(utc_offset, 60 * 60 * 24)
DateTime.new(year, month, day, hour, min, seconds, offset)
end
end
Si...
How can I check for an empty/undefined/null string in JavaScript?
... |
edited Jun 2 '18 at 0:29
user5779136
answered Sep 30 '08 at 17:20
...
Why do I need Transaction in Hibernate for read-only operations?
...commits it). This also can be configured on Connection Pool level (e.g. C3P0 gives you such an option, rollback by default).
Another thing when it comes to Hibernate, Spring sets the FlushMode to MANUAL in case of read-only transactions, which leads to other optimizations like no need for dirty chec...
Simulate delayed and dropped packets on Linux
...lay to all packets going out of the local Ethernet.
# tc qdisc add dev eth0 root netem delay 100ms
Now a simple ping test to host on the local network should show an increase of 100 milliseconds. The delay is limited by the clock resolution of the kernel (Hz). On most 2.4 systems, the system ...
Random Number Between 2 Double Numbers
...
Yes.
Random.NextDouble returns a double between 0 and 1. You then multiply that by the range you need to go into (difference between maximum and minimum) and then add that to the base (minimum).
public double GetRandomNumber(double minimum, double maximum)
{
Random ...
What does passport.session() middleware do?
...son/passport/blob/master/lib/strategies/session.js
Specifically lines 59-60:
var property = req._passport.instance._userProperty || 'user';
req[property] = user;
Where it essentially acts as a middleware and alters the value of the 'user' property in the req object to contain the deserialized id...