大约有 48,000 项符合查询结果（耗时：0.0484秒） [XML]
Random color generator
...rs. To ensure the colors are distinct I avoid using a random generator and select "evenly spaced" colors from the rainbow.
This is perfect for creating pop-out markers in Google Maps that have optimal "uniqueness" (that is, no two markers will have similar colors).
function rainbow(numOfSteps, ste...
How do I check if string contains substring? [duplicate]
...shopping cart that displays product options in a dropdown menu and if they select "yes", I want to make some other fields on the page visible.
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How do I add indices to MySQL tables?
...t I don't think it is used while I query my table. Do I have to change the select query when using an index ?
– Ced
Aug 12 '15 at 16:04
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What's the best way to determine the location of the current PowerShell script?
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}
I've placed this function in my profile. It works in ISE using F8/Run Selection too.
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Generate list of all possible permutations of a string
...re x and y is how you define them and r is the number of characters we are selecting from --if I am understanding you correctly. You should definitely generate these as needed and not get sloppy and say, generate a powerset and then filter the length of strings.
The following definitely isn't the b...
Change Checkbox value without triggering onCheckChanged
... The doc reads "Called when the checked radio button has changed. When the selection is cleared, checkedId is -1". This is really misleading, it should either have the isChecked passed through as well.
– AA_PV
Jan 3 '17 at 22:10
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GIT: Checkout to a specific folder
...ir checkout HEAD -- . it doesn't do anything to the index, just copies the selected branch to the specified location (with the addition of a .git file).
– Roger Dueck
Oct 25 '17 at 16:43
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Explanation of [].slice.call in javascript?
...'s being called from the parameter (the NodeList returned by document.querySelectorAll('a')) rather than from an array.
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How to copy a collection from one database to another in MongoDB
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The best way is to do a mongodump then mongorestore. You can select the collection via:
mongodump -d some_database -c some_collection
[Optionally, zip the dump (zip some_database.zip some_database/* -r) and scp it elsewhere]
Then restore it:
mongorestore -d some_other_db -c some_or_ot...
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'
... problem was:
To see which user you are, and whose permissions you have:
select user(), current_user();
To delete the pesky anonymous user:
drop user ''@'localhost';
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