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format statement in a string resource file
...e, you may need %f (for floating point): docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html
– LocalPCGuy
Apr 17 '14 at 20:04
2
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How to evaluate a math expression given in string form?
...er.org/
https://mathparser.org/mxparser-tutorial/
https://mathparser.org/api/
And few examples
1 - Simple furmula
Expression e = new Expression("( 2 + 3/4 + sin(pi) )/2");
double v = e.calculate()
2 - User defined arguments and constants
Argument x = new Argument("x = 10");
Constant a = new ...
Rails auto-assigning id that already exists
... answered Feb 27 '13 at 9:40
ApieApie
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...
Using Core Data, iCloud and CloudKit for syncing and backup and how it works together
...time you want to read/write cloud data, you need to make explicit CloudKit API calls to do so. Nothing happens automatically. CloudKit does not store data on the device, so the data is not available if the device is offline. CloudKit also adds some features not available to Core Data with iCloud-- l...
multiprocessing: How do I share a dict among multiple processes?
...e is a .Pool() method to the manager instance that mimics all the familiar API of the top-level multiprocessing.
from itertools import repeat
import multiprocessing as mp
import os
import pprint
def f(d: dict) -> None:
pid = os.getpid()
d[pid] = "Hi, I was written by process %d" % pid
...
Change a column type from Date to DateTime during ROR migration
...uld throw a ActiveRecord::IrreversibleMigration exception. Only methods in api.rubyonrails.org/classes/ActiveRecord/Migration/… should be used in the change method.
– davekaro
Jan 9 '13 at 16:24
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How to calculate the CPU usage of a process by PID in Linux from C?
...ing the usage of current process or its child
Update:
I can't remember an API. But all details will be in /proc/PID/stat, so if we could parse it, we can get the percentage.
EDIT:
Since CPU % is not straight forward to calculate, You could use sampling kind of stuff here. Read ctime and utime for ...
How to pip install a package with min and max version range?
...;=0.2 ) and a maximum version which should never be installed (theoretical api: pip install package<0.3 ).
3 Answers
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What is the difference between std::array and std::vector? When do you use one over other? [duplicat
... own personal hand coded Array<> template class, which has a simpler API compared with std::array or std::vector. For example:
To use a dynamic Array:
Array<> myDynamicArray; // Note array size is not given at compile time
myDynamicArray.resize(N); // N is a run time value
...
To ...
How to detect internet speed in JavaScript?
...
Well, this is 2017 so you now have Network Information API (albeit with a limited support across browsers as of now) to get some sort of estimate downlink speed information:
navigator.connection.downlink
This is effective bandwidth estimate in Mbits per sec. The browser makes ...