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How to deal with floating point number precision in JavaScript?
...OfDecimals(Y) = ExpectedNumberOfDecimals. That is to say that if we have 0.123 * 0.12 then we know that there will be 5 decimal places because 0.123 has 3 decimal places and 0.12 has two. Thus if JavaScript gave us a number like 0.014760000002 we can safely round to the 5th decimal place without fea...
Only read selected columns
...wever. Large files are usually compressed.
– CoderGuy123
Feb 28 '16 at 9:03
There is a feature request for enabling th...
Inserting multiple rows in mysql
...ship) table :
// get data
$table_1 = get_table_1_rows();
$table_2_fk_id = 123;
// prepare first part of the query (before values)
$query = "INSERT INTO `table` (
`table_1_fk_id`,
`table_2_fk_id`,
`insert_date`
) VALUES ";
//loop the table 1 to get all foreign keys and put it in array
for...
Find element's index in pandas Series
... [122]: myseries = pd.Series([1,7,0,7,5], index=['a','b','c','d','e'])
In [123]: list(myseries[myseries==7].index)
Out[123]: ['b', 'd']
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...
html - table row like a link
...hn Smith</a></td>
<td><a href="person1.html">123 Fake St</a></td>
<td><a href="person1.html">90210</a></td>
</tr>
<tr>
<td><a href="person2.html">Peter Nguyen</a></td>
<...
Check if table exists without using “select from”
...ny errors. This should be the accepted answer.
– vaso123
Mar 10 '17 at 0:06
1
Note that on a TEMP...
send/post xml file using curl command line
...lt;/Expiry_Date^> ^
^<VerificationStr2^>123^</VerificationStr2^> ^
^<CVD_Presence_Ind^>1^</CVD_Presence_Ind^> ^
^<Reference_No^>Some Reference Text^</Reference_No^> ^
^<Client_Email^>j...
How do I dynamically assign properties to an object in TypeScript?
.../ the following is an error,
// so you haven't lost type safety
foo.bar = 123;
Alternatively you can mark these properties as optional:
interface IFoo{
bar?:string;
baz?:string;
boo?:string;
}
// Now your simple initialization works
var foo:IFoo = {};
Try it online
...
How do I (or can I) SELECT DISTINCT on multiple columns?
...would qualify as "distinct" (though looking identical to the human eye):
(123, NULL)
(123, NULL)
Also passes in a unique index and almost anywhere else, since NULL values do not compare equal according to the SQL standard. See:
Create unique constraint with null columns
OTOH, GROUP BY, DISTIN...
Inspect hovered element in Chrome?
...-script-execution which helped me:
In the console:, Run:
const F12 = 123
window.addEventListener('keydown', function(event) {
if (event.keyCode === F12 ) {
debugger;
}
});
Highlight element with inspector
Hit F12
You can now inspect the element, with JavaScri...