大约有 47,000 项符合查询结果（耗时：0.0540秒） [XML]
Rails 3: Get Random Record
...-----+---------------+---------+---------+-------+------+-------+
we can now use only indexes and the primary key and do the job about 500 times faster!
UPDATE:
as pointed out by icantbecool in comments the above solution has a flaw if there are deleted records in the table.
A workaround in tha...
The input is not a valid Base-64 string as it contains a non-base 64 character
...w. Logic is to remove everything after , if data: is present. Bam. Working now.
– Maxime Rouiller
Jun 14 '16 at 13:14
...
Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...ird value returns true - 128 == 128 is evaluated, and is of course, true.
Now, a fair bit happens to make that third result true:
An unboxing conversion occurs with respect to the equivalence operator you're using and the datatypes you have - namely, int and Integer. You're getting an Integer fr...
What key shortcuts are to comment and uncomment code?
...ss that these are the defaults, at least in the C++ defaults, but I don't know for sure. The best way to find out is to check your settings.)
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Proxies with Python 'Requests' module
...', proxies=urllib.request.getproxies())
It works really well and urllib knows about getting Mac OS X and Windows settings as well.
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How do I check that a number is float or integer?
...viding by 1:
function isInt(n) {
return n % 1 === 0;
}
If you don't know that the argument is a number you need two tests:
function isInt(n){
return Number(n) === n && n % 1 === 0;
}
function isFloat(n){
return Number(n) === n && n % 1 !== 0;
}
Update 2019
5 years a...
Compiling problems: cannot find crt1.o
...idn't have it installed in the first place, thus you need to reinstall it, now that you reverted back to gcc.
You can do so like this on Debian:
aptitude show libc-dev
Ubuntu:
apt-get install libc-dev
On Ubuntu, if you don't have libc-dev, since I cannot find it on packages.ubuntu.com, you ca...
fastest MD5 Implementation in JavaScript
There are many MD5 JavaScript implementations out there.
Does anybody know which one is the most advanced, most bugfixed and fastest?
...
bash/fish command to print absolute path to a file
...will still give you a valid path given some relative path. If you want to know about file existence use another tool like e.g. test.
– Benjamin Bannier
Feb 27 '13 at 17:47
...
CKEditor instance already exists
...laying but the other two where, I added the above code and all teh editors now appear
– Craig Angus
Apr 29 '10 at 15:56
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