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Why is using the rails default_scope often recommend against?
...ate) posts. So far so good.
2.1.1 :001 > Post.all
Post Load (0.2ms) SELECT "posts".* FROM "posts" WHERE "posts"."published" = 't'
Well this is pretty much what we expect. Now lets try:
2.1.1 :004 > Post.new
=> #<Post id: nil, title: nil, published: true, created_at: nil, update...
Is there a way to change context to iframe in javascript console?
...the console to accomplish this same thing, or do I have to click the frame selector?
– bodine
Aug 7 '13 at 23:25
@bodi...
How to use a variable to specify column name in ggplot
... on the value if the name is not found. This is actually what happens with select, but not with group_by ... It's possible to hack around it but not obvious. If it's important to you I think it would deserve its own question.
– Moody_Mudskipper
Aug 20 '19 at 23...
How to view DLL functions?
...
You may try the Object Browser in Visual Studio.
Select Edit Custom Component Set. From there, you can choose from a variety of .NET, COM or project libraries or just import external dlls via Browse.
...
How to format an inline code in Confluence?
... {{example}}.
If you're using Confluence 4.x or higher, you can also just select the "Preformatted" option from the paragraph style menu. Please note that will apply to the entire line.
Full reference here.
share
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Sequence contains no elements?
...in dc.BlogPosts
where p.BlogPostID == id
select p).Single();
Also; if this is LINQ-to-SQL, then in the current version you get a slightly better behaviour if you use the form:
var id = ID;
BlogPost post = dc.BlogPosts.Single(p => p.BlogPostID == id);
...
Eclipse “Server Locations” section disabled and need to change to use Tomcat installation
...
Here is how I did it:
Right click on my tomcat server in "Servers" view, select "Properties…"
In the "General" panel, click on the "Switch Location" button
The "Location: [workspace metadata]" bit should have been replaced by something else.
Open (or close and reopen) the Overview screen for the...
Internet Explorer 8 Developer Tools not displaying
... You
should get a window floating at the edge of the screen. Type M to
select Move, then press an arrow key to enter Move mode.
Additional remark by @WebSolProv:
It would appear that something happens with IE that causes the developer tools window to be shrunk to the height of the header b...
Delete all records in a table of MYSQL in phpMyAdmin
...ampserver 2.2. When I want to delete all records of a table in phpMyAdmin (select all) it deletes only one record not all records. Why it does not delete all records?
...
Transaction isolation levels relation with locks on table
... writes data and commit/rollback (depending on results). B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in the table while writing on it. This means A writes data (unc...