大约有 1,742 项符合查询结果（耗时：0.0133秒） [XML]
What is the maximum possible length of a query string?
...5.x. However, longer URLs will work. No further testing was done after 100,000 characters.
Safari (Browser)
At least 80,000 characters will work. Testing was not tried beyond that.
Opera (Browser)
At least 190,000 characters will work. Stopped testing after 190,000 characters. Opera 9 for Windows co...
Max length for client ip address [duplicate]
...ly written as 8 groups of 4 hex digits separated by colons: 2001:0db8:85a3:0000:0000:8a2e:0370:7334. 39 characters is appropriate to store IPv6 addresses in this format.
Edit: However, there is a caveat, see @Deepak's answer for details about IPv4-mapped IPv6 addresses. (The correct maximum IPv6 s...
Using sed to mass rename files
...ge p5-file-rename), or other systems with perl rename (prename):
rename s/0000/000/ F0000*
or on systems with rename from util-linux-ng, such as RHEL:
rename 0000 000 F0000*
That's a lot more understandable than the equivalent sed command.
But as for understanding the sed command, the sed man...
CSS: Change image src on img:hover
...kground as like
div {
background: url('http://dummyimage.com/100x100/000/fff');
}
div:hover {
background: url('http://dummyimage.com/100x100/eb00eb/fff');
}
And if you think you can use some javascript code then you should be able to change the src of the img tag as below
function h...
Why would finding a type's initializer throw a NullReferenceException?
...
with csc test.cs:
(196c.1874): Access violation - code c0000005 (first chance)
mscorlib_ni!System.RuntimeType.GetConstructorImpl(System.Reflection.BindingFlags, System.Reflection.Binder, System.Reflection.CallingConventions, System.Type[], System.Reflection.ParameterModifier[])+0x...
How to list variables declared in script in bash?
...puriously make it into the output.
+ function a() { echo $'\nA2=B'; }; A0=000; A9=999;
+ SOLUTION | grep '^A[0-9]='
A0=000
A9=999
AND: The "DejayClayton" problem is solved (embedded newlines in variable values do not disrupt the output - each VAR=VALUE get a single output line):
+ A1=$'111\nA2=...
ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
I use the following command:
15 Answers
15
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ERROR 1130 (HY000): Host '' is not allowed to connect to this MySQL server [duplicate]
Why oh why can I not connect to mysql?
7 Answers
7
...
Check if a given key already exists in a dictionary
...est you can run yourself. The results may astonish you. For dicts with ~50,000 keys, not calling keys() gives you .01 second computational benefit. For ~500,000 keys, not calling keys() gives you .1 second benefit. For ~5,000,000 keys, not calling keys() is .4 seconds faster, but for 50,000,000 keys...
Does JavaScript have a built in stringbuilder class?
...script-concat-vs-join/2.
The test-cases concatenate or join the alphabet 1,000 times.
In current browsers (FF, Opera, IE11, Chrome), "concat" is about 4-10 times faster than "join".
In IE8, both return about equal results.
In IE7, "join" is about 100 times faster unfortunately.
...