大约有 510 项符合查询结果（耗时：0.0163秒） [XML]
How to secure MongoDB with username and password
... server with --auth. However, when I try to login (./mongo -u theadmin -p 12345 ) I fail. I can't login.
– murvinlai
Feb 3 '11 at 0:10
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How to test if a string is JSON or not?
...
JSON.parse(1234) OR JSON.parse(0) OR JSON.parse(false) OR JSON.parse(null) all will not raise Exception and will return true !!. do not use this answer
– Zalaboza
Sep 12 '15 at 23:26
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What is the difference between . (dot) and $ (dollar sign)?
...let third x = head $ tail $ tail x
Prelude> map third ["asdf", "qwer", "1234"]
"de3"
If we only use third once, we can avoid naming it by using a lambda:
Prelude> map (\x -> head $ tail $ tail x) ["asdf", "qwer", "1234"]
"de3"
Finally, composition lets us avoid the lambda:
Prelude>...
How to make sure that string is valid JSON using JSON.NET
...tc was based on the fact that JToken.Parse would parse the values such as "1234" or "'a string'" as a valid token. The other option could be to use both JObject.Parse and JArray.Parse in parsing and see if anyone of them succeeds, but I believe checking for {} and [] should be easier. (Thanks @Rhino...
Get query string parameters url values with jQuery / Javascript (querystring)
...n use this new API to get values from the location!
// Assuming "?post=1234&action=edit"
var urlParams = new URLSearchParams(window.location.search);
console.log(urlParams.has('post')); // true
console.log(urlParams.get('action')); // "edit"
console.log(urlParams.getAll('action')); // ["ed...
How can I pad an int with leading zeros when using cout
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cout.fill('*');
cout << -12345 << endl; // print default value with no field width
cout << setw(10) << -12345 << endl; // print default with field width
cout << setw(10) << left << -12345 << endl; // pr...
How do you squash commits into one patch with git format-patch?
...hod would output. For example, to create the patch between commit abcd and 1234:
git diff abcd..1234 > patch.diff
git log abcd..1234 > patchmsg.txt
Then when applying the patch:
git apply patch.diff
git add -A
git reset patch.diff patchmsg.txt
git commit -F patchmsg.txt
Don't forget the ...
How to round a number to significant figures in Python
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You can use negative numbers to round integers:
>>> round(1234, -3)
1000.0
Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.023...
Changing MongoDB data store directory
...wered May 11 '11 at 8:24
lobster1234lobster1234
7,4692323 silver badges2929 bronze badges
...
How to view the assembly behind the code using Visual C++?
...oost::filesystem::path dir = p.parent_path();
// transform c:\foo\bar\1234\a.exe
// into c:\foo\bar\1234\1234.asm
p.remove_filename();
system ( (dircmd + p.string()).c_str() );
auto subdir = p.end(); // pointing at one-past the end
subdir--; // ...