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Most efficient way to prepend a value to an array
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Michael Robinson
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answered Dec 25 '14 at 13:30
uroslatesuroslates
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try/catch + using, right syntax
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100
I prefer the second one. May as well trap errors relating to the creation of the object as wel...
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One-liner to take some properties from object in ES 6
...object.
const person = {
fname: 'tom',
lname: 'jerry',
aage: 100,
}
let newPerson = {};
({fname: newPerson.fname, lname: newPerson.lname} = person);
console.log(newPerson);
share
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How to write to file in Ruby?
...ed that an answer that admittedly copies another answer could receive over 100 upvotes. I can see posting the first sentence as a comment on the question, but that's it.
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How do I set the proxy to be used by the JVM
...he example with the Unix shell script:
JAVA_FLAGS=-Dhttp.proxyHost=10.0.0.100 -Dhttp.proxyPort=8800
java ${JAVA_FLAGS} ...
When using containers such as JBoss or WebLogic, my solution is to edit the start-up scripts supplied by the vendor.
Many developers are familiar with the Java API (javadocs...
How can I multiply all items in a list together with Python?
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@jheld: I timed product-ing the numbers from 1 to 100. In both python2 and 3, lambda took an average of .02s/1000 repetitions, whereas operator.mul took an average of .009s/1000 repetitions, making operator.mul an order of magnitude faster.
– whereswald...
Is there a better way to run a command N times in bash?
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@Joe Koberg, thanks for the tip. I'm typically use N<100 so this seems good.
– bstpierre
Sep 17 '10 at 18:11
11
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SQL exclude a column using SELECT * [except columnA] FROM tableA?
... (but not recommended).
CREATE TABLE contact (contactid int, name varchar(100), dob datetime)
INSERT INTO contact SELECT 1, 'Joe', '1974-01-01'
DECLARE @columns varchar(8000)
SELECT @columns = ISNULL(@columns + ', ','') + QUOTENAME(column_name)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = '...
Code for a simple JavaScript countdown timer?
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var count=30;
var counter=setInterval(timer, 1000); //1000 will run it every 1 second
function timer()
{
count=count-1;
if (count <= 0)
{
clearInterval(counter);
//counter ended, do something here
return;
}
//Do code for showing the number...