大约有 40,000 项符合查询结果（耗时：0.0389秒） [XML]
I forgot the password I entered during postgres installation
...a TCP connection.
# sudo -u postgres psql
could not change directory to "/root"
psql (9.1.11)
Type "help" for help.
postgres=# \password
Enter new password:
Enter it again:
postgres=# \q
Failing:
# psql -U postgres -W
Password for user postgres:
psql: FATAL: Peer authentication failed for user...
How to fix homebrew permissions?
...structive to some directories? I have a MacGPG2 directory that is owned by root and another dot-file as well.
– Jahhein
Jan 27 '18 at 13:21
5
...
Removing leading zeroes from a field in a SQL statement
... VARCHAR(10) field. So, for example, if the field contains '00001A', the SELECT statement needs to return the data as '1A'.
...
Differences between “BEGIN RSA PRIVATE KEY” and “BEGIN PRIVATE KEY”
...hm options and ENGINE provided algorithms can be used.. But some software (mysql) can use only PKCS#1 keys. Converting from PKCS#8 to PKCS#1 can be done with openssl rsa -in key.pem -out key.pem. Converting the other way can be done with openssl pkey -in key.pem -out key.pem.
–...
Fluent and Query Expression — Is there any benefit(s) of one over other?
...me in fullNames
from name in fullName.Split()
orderby fullName, name
select name + " came from " + fullName;
Now compare this to the same thing in method syntax:
var query = fullNames
.SelectMany (fName => fName.Split().Select (name => new { name, fName } ))
.OrderBy (x => x.fN...
Visual Studio “Find” results in “No files were found to look in. Find stopped progress.”
... Studio
running on several versions of Windows
and have identified the root cause as
external to VS. The Windows team
unfortunately did not have time to fix
this for their current release, but we
are working with them to hopefully
have this bug fixed for a future
version of Windows. ...
Get/pick an image from Android's built-in Gallery app programmatically
...
https://github.com/hanscappelle/SO-2169649
(note that the multiple file selection still needs work)
Single Picture Selection
With support for images from file explorers thanks to user mad.
public class BrowsePictureActivity extends Activity {
// this is the action code we use in our inten...
How can foreign key constraints be temporarily disabled using T-SQL?
...use this script to list the constraint status. Will be very helpfull:
SELECT (CASE
WHEN OBJECTPROPERTY(CONSTID, 'CNSTISDISABLED') = 0 THEN 'ENABLED'
ELSE 'DISABLED'
END) AS STATUS,
OBJECT_NAME(CONSTID) AS CONSTRAINT_NAME,
OBJECT_NAME(FKEYID) AS TABLE_NAM...
Set keyboard caret position in html textbox
...tRange();
range.move('character', caretPos);
range.select();
}
else {
if(elem.selectionStart) {
elem.focus();
elem.setSelectionRange(caretPos, caretPos);
}
else
elem.focus();
...
What's the difference(s) between .ToList(), .AsEnumerable(), AsQueryable()?
...y we would typically write something like
var query = context.Observations.Select(o => o.Id)
.AsEnumerable().Select(x => MySuperSmartMethod(x))
ToList – which converts an IEnumerable<T> to a List<T> – is often used for this purpose as well. The advantage of...