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Is it possible to “await yield return DoSomethingAsync()”
... DownLoadAllUrls(string[] urls)
{
return Task.WhenAll(from url in urls select DownloadHtmlAsync(url));
}
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How to execute a raw update sql with dynamic binding in rails
...ch less efficient, isn't it. Doesn't this trade one update statement for a select, bring the records into rails memory, update each record and send an update statement back for each record. 1 update vs 1 per record and much bandwidth, etc.? Does AR optimize this or not? I don't think it does.
...
Maven2: Missing artifact but jars are in place
...s of turning it off and on again.
Try right-clicking on the project and selecting Maven->Update Project Configuration.
Disable then re-enable dependency management (right-click Maven->Disable Dependency Management then Maven->Enable Dependency Management
Close the project and reopen it.
...
ALTER DATABASE failed because a lock could not be placed on database
... for a couple of minutes)
CREATE DATABASE TESTING123
GO
USE TESTING123;
SELECT NEWID() AS X INTO FOO
FROM sys.objects s1,sys.objects s2,sys.objects s3,sys.objects s4 ,sys.objects s5 ,sys.objects s6
Connections 2 and 3
set lock_timeout 5;
ALTER DATABASE TESTING123 SET SINGLE_USER WITH ROLLBACK...
How to get the pure text without HTML element using JavaScript?
...n many ways. innerText tries to approximate what would happen if you would select what you see (rendered html) and copy it to the clipboard, while textContent sort of just strips the html tags and gives you what's left.
innerText also has compatability with old IE browsers (came from there).
...
How to reset or change the MySQL root password?
...qld]
skip-grant-tables
sudo service mysql restart
mysql -u root
use mysql
select * from mysql.user where user = 'root'; - Look at the top to determine whether the password column is called
password or authentication_string
UPDATE mysql.user set *password_field from above* = PASSWORD('your_new_passw...
How to debug Angular JavaScript Code
...ference in console from a visual element
In many non-IE browsers, you can select an element by right clicking an element and clicking "Inspect Element". Alternatively you can also click on any element in Elements tab in Chrome, for example. The latest selected element will be stored in variable $0 ...
Why would you use an ivar?
..., @"Isabella", @"Ava",
@"Mia", @"Emily", @"Abigail", @"Madison", @"Charlotte"
];
const NSUInteger nameCount = maleNames.count;
assert(maleNames.count == femaleNames.count); // Better be safe than sorry
allAcocuntsA = [NSMutableArray arrayWithCapacity:ammount];
allAccount...
EditText underline below text property
...above, you can get images from a lot of components in the Holo theme. Just select "EditText" and the color you want. You can see a preview at the bottom of the page.
Download the .zip file, and copy paste the resources in your project (images and the XML).
if your XML is named: apptheme_edit_text_...
Query a parameter (postgresql.conf setting) like “max_connections”
... SHOW, such as minimum
and maximum values.
For your original request:
SELECT *
FROM pg_settings
WHERE name = 'max_connections';
Finally, there is current_setting(), which can be nested in DML statements:
SELECT current_setting('max_connections');
Related:
How to test my ad-hoc SQL wit...