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How to TryParse for Enum value?
...is available from MSDN: msdn.microsoft.com/library/vstudio/dd991317%28v=vs.100%29.aspx
– Christian
Sep 19 '13 at 9:36
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The performance impact of using instanceof in Java
...etClass() == _.class implementation
I used jmh to run the benchmark with 100 warmup calls, 1000 iterations under measuring, and with 10 forks. So each option was measured with 10 000 times, which takes 12:18:57 to run the whole benchmark on my MacBook Pro with macOS 10.12.4 and Java 1.8. The bench...
List of ANSI color escape sequences
...erm (not in standard) ║
║ 100–107 ║ Set bright background color ║ aixterm (not in standard) ║
╚══════════╩═════════════════════...
What is “vectorization”?
...thmetic operation. eg. if we want to add 10 to value if it is greater then 100. we can either.
if(x[i] > 100) x[i] += 10; // this will branch execution flow.
or we can model the condition into arithmetic operation creating a condition vector c,
c[i] = x[i] > 100; // storing the condition ...
How to find the length of a string in R
... uq max neval
nchar(x) 11.868 12.776 13.1590 13.6475 41.815 100
str_length(x) 30.715 33.159 33.6825 34.1360 173.400 100
stri_length(x) 2.653 3.281 4.0495 4.5380 19.966 100
and also works fine with NA's
nchar(NA)
## [1] 2
stri_length(NA)
## [1] NA
...
Remove empty elements from an array in Javascript
...e(/(\r\n|\n|\r)/gm,"")});
Example:
arr = ["hello",0,"",null,undefined,1,100," "]
arr.filter(function(e){return e});
Return:
["hello", 1, 100, " "]
UPDATE (based on Alnitak's comment)
In some situations you may want to keep "0" in the array and remove anything else (null, undefined and "")...
How do I parse a string with a decimal point to a double?
...
this code doesn't work for a number like 100.35 if the system culture uses a comma as the separator. you'd expect it to return a number of about 100, but it returns 10035.
– Lennart
Aug 6 at 11:31
...
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...存cache中放好可秒杀的数量,还可以把数据分布开来放,100商品,10台服务器一台放10个,无需在当时操作任何数据库。可以订单数够后,停止秒杀,然后批量写数据库。而且秒杀的商品不多。火车票这个不是像秒杀那么简单的,...
AWS Error Message: A conflicting conditional operation is currently in progress against this resourc
...ets or replace buckets, it is not healthy.
Note that you have a limit of 100 buckets for an account (see here). EDIT: Now this limit is a "soft limit" and you can increase it if needed.
Also note that a creation of a bucket takes time and:
...it is not appropriate to make bucket create or de...
trying to animate a constraint in swift
...
SWIFT 4.x :
self.mConstraint.constant = 100.0
UIView.animate(withDuration: 0.3) {
self.view.layoutIfNeeded()
}
Example with completion:
self.mConstraint.constant = 100
UIView.animate(withDuration: 0.3, animations: {
self.view.layoutIfNeeded()
...
