大约有 39,400 项符合查询结果（耗时：0.0174秒） [XML]
How to revert a merge commit that's already pushed to remote branch?
...4c0f0c012 "this is a wrong commit"
commit 3779ab50e72908da92d2cfcd72256d7a09f446ba "this is the correct commit"
reset the branch to the commit hash copied in the previous step
git reset <commit-hash> (i.e. 3779ab50e72908da92d2cfcd72256d7a09f446ba)
run the git status to show all the change...
htaccess Access-Control-Allow-Origin
... In case it doesn't work, you should try enabling the headers module: a2enmod headers
– Joaquín O
Apr 29 '19 at 12:32
|
show 1 more co...
Why is “a” != “a” in C?
...not possible to compare them directly. Consider
int a1[] = {1, 2, 3};
int a2[] = {3, 4, 5};
a1 == a2 // is this meaningful? Yes and no; it *does* compare the arrays for
// "identity", but not for their values. In this case the result
// is always false, because the arrays (a1 and ...
Linq to Entities join vs groupjoin
...ou have two lists:
Id Value
1 A
2 B
3 C
Id ChildValue
1 a1
1 a2
1 a3
2 b1
2 b2
When you Join the two lists on the Id field the result will be:
Value ChildValue
A a1
A a2
A a3
B b1
B b2
When you GroupJoin the two lists on the Id field the result will be:
Valu...
Most efficient way to prepend a value to an array
...
If you would like to prepend array (a1 with an array a2) you could use the following:
var a1 = [1, 2];
var a2 = [3, 4];
Array.prototype.unshift.apply(a1, a2);
console.log(a1);
// => [3, 4, 1, 2]
sh...
NPM - How to fix “No readme data”
...gistry.npmjs.org/xxx/-/xxx-0.3.60-beta.tgz
.shasum: 021e30640a62f13905b1e2b7a4facd169df46a1d
.integrity: sha512-9N4pUwwoYGNek34fCCCjURuQdx1K5VBlCWl4t1sy8wi3xul/N/TiDvjmUBF24t2Dg2fX6cFM9on+tftnVaEr7A==
.unpackedSize: 114.5 kB
dependencies:
@hanyk/rc-viewer: ^0.0.3 crypto-js: ^3.1.9-1 ...
Select top 10 records for each category
...
I do it this way:
SELECT a.* FROM articles AS a
LEFT JOIN articles AS a2
ON a.section = a2.section AND a.article_date <= a2.article_date
GROUP BY a.article_id
HAVING COUNT(*) <= 10;
update: This example of GROUP BY works in MySQL and SQLite only, because those databases are more...
How do you sign a Certificate Signing Request with your Certification Authority?
...ubject Key Identifier:
4A:9A:F3:10:9E:D7:CF:54:79:DE:46:75:7A:B0:D0:C1:0F:CF:C1:8A
X509v3 Authority Key Identifier:
keyid:4A:9A:F3:10:9E:D7:CF:54:79:DE:46:75:7A:B0:D0:C1:0F:CF:C1:8A
X509v3 Basic Constraints: critical
CA:TRUE
...
Checking to see if one array's elements are in another array in PHP
...y vs array_intersect:
$a1 = array(2,4,8,11,12,13,14,15,16,17,18,19,20);
$a2 = array(3,20);
$intersect_times = array();
$in_array_times = array();
for($j = 0; $j < 10; $j++)
{
/***** TEST ONE array_intersect *******/
$t = microtime(true);
for($i = 0; $i < 100000; $i++)
{
...
Max length for client ip address [duplicate]
...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 string lengt...