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Is using Random and OrderBy a good shuffle algorithm?
... is to yield the numbers as soon as they are swapped. This will reduce the start-up cost, while keeping the iteration cost at O(1) (basically 5 operations per iteration). The total cost would remain the same, but the shuffling itself would be quicker. In cases where this is called as collection.Shuf...
UITableView - scroll to the top
...rst object is going to be section 0, row 0. May be that my table view will start from section number 5.
34 Answers
...
Redirecting stdout to “nothing” in python
...stuvwxyz1234567890"):
temp = sys.stdout
sys.stdout = out
i = 0
start_t = datetime.datetime.now()
while i < it:
print st
i = i+1
end_t = datetime.datetime.now()
sys.stdout = temp
print out, "\n took", end_t - start_t, "for", it, "iterations"
class devnull():
...
GDB corrupted stack frame - How to debug?
...al purpose registers and LR are stored in stack before the called function starts executing. Once the function finishes, the value of LR is poped into PC and hence the function returns. So If stack is corrupted, we can see a wrong value is PC right? In this case may be adjusting stack pointer will l...
How to Batch Rename Files in a macOS Terminal?
...mv "$f" "${f/_*_/_}"; done
Note: If there's a chance that your filenames start with -, place -- before them[1]:
mv -- "$f" "${f/_*_/_}"
Note: echo is prepended to mv so as to perform a dry run. Remove it to perform actual renaming.
You can run it from the command line or use it in a script.
"...
Convert .pem to .crt and .key
...ad certificate 140584440387400:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:703:Expecting: TRUSTED CERTIFICATE
– Damien Carol
May 20 '15 at 13:57
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Clojure differences between Ref, Var, Agent, Atom, with examples
...is question, I can reproduce a short snip-it of the motivations for each:
start by watching this video on the notion of Identity and/or studying here.
Refs are for Coordinated Synchronous access to "Many Identities".
Atoms are for Uncoordinated synchronous access to a single Identity.
Agents are ...
Retrieve column names from java.sql.ResultSet
...
You may be surprised as me seeing column count starting at 1. You can iterate through column names with for (int i = 1; i <= rsmd.getColumnCount(); i++) String name = rsmd.getColumnName(i);
– Alphaaa
Nov 19 '15 at 7:03
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How to throw a C++ exception
...ception, when you catch "all possible" exceptions types, you should always start the catch clauses with the "most derived" exception type that may be caught. See the example (of what NOT to do):
#include <iostream>
#include <string>
using namespace std;
class MyException : public exce...
Show just the current branch in Git
... Finally, what seems like it should have been there from the start, has been added!
– dtasev
Mar 22 '19 at 11:43
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