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Replace a value if null or undefined in JavaScript
...at this doesn't work if 0 is a valid value of i.
– jt000
Feb 1 '15 at 17:40
14
If anything falsey...
“On-line” (iterator) algorithms for estimating statistical median, mode, skewness, kurtosis?
...om your set (e.g. that you don't introduce a bias by picking the first 100'000 values). The same approach can also be used for estimating mode and median for the normal case (for both the sample mean is an estimator).
Further comments
All the algorithms above can be run in parallel (including many...
How can I get the sha1 hash of a string in node.js?
...
Obligatory: SHA1 is broken, you can compute SHA1 collisions for 45,000 USD. You should use sha256:
var getSHA256ofJSON = function(input){
return crypto.createHash('sha256').update(JSON.stringify(input)).digest('hex')
}
To answer your question and make a SHA1 hash:
const INSECURE_ALG...
Google Maps JS API v3 - Simple Multiple Marker Example
...ake it unique. This example will be very helpful if you want to test 500, 1000, xxx markers and performance.
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Fastest way to replace NAs in a large data.table
...) # v2.8.2
set.seed(1)
dt1 = create_dt(2e5, 200, 0.1)
dim(dt1)
[1] 200000 200 # more columns than Ramnath's answer which had 5 not 200
f_andrie = function(dt) remove_na(dt)
f_gdata = function(dt, un = 0) gdata::NAToUnknown(dt, un)
f_dowle = function(dt) { # see EDIT later for mor...
Do subclasses inherit private fields?
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Think of it this way. Borat's father Boltok has a safe containing $100,000. He does not want to share his "private" variable safe. So, he does not provide a key for the safe. Borat inherits the safe. But, what good is it if he cannot even open it ? If only his
dad had provided the key.
Parent ...
size_t vs. uintptr_t
...m", @Chris. An implementation is free to restrict pointers to the range 0xf000-0xffff - this requires a 16bit intptr_t but only a 12/13-bit ptrdiff_t.
– paxdiablo
Sep 23 '09 at 20:59
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MongoDB vs. Cassandra [closed]
...s clear text. For SSL you have to go with Entprise edition. And that is 10,000$. Goodbye Mongodb. Refactoring my code to Cassandra.
– Karthik Sankar
Oct 2 '14 at 15:16
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Regular expression to match non-ASCII characters?
...(0-127, i.e. 0x0 to 0x7F).
You can do the same thing with Unicode:
[^\u0000-\u007F]+
For unicode you can look at this 2 resources:
Code charts list of Unicode ranges
This tool to create a regex filtered by Unicode block.
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Sleep Command in T-SQL?
... wait for a certain time...', 0, 1) WITH NOWAIT
WAITFOR TIME '16:43:30.000'
RAISERROR('I waited!', 0, 1) WITH NOWAIT
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