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MongoDB: Combine data from multiple collections into one..how?
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Thanks @rmarscher your extra details really helped me to better understand everything.
– benstr
Nov 10 '14 at 21:29
5
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Why does installing Nokogiri on Mac OS fail with libiconv is missing?
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why do I need the extra "--" in the middle of the gem install command?
– Rembrandt Q. Einstein
Feb 12 '15 at 19:19
3
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Many-to-many relationship with the same model in rails?
...schema for your posts:
create_table "posts", :force => true do |t|
t.string "name", :null => false
end
For any many-to-many relationship, you need a join table. Here's the schema for that:
create_table "post_connections", :force => true, :id => false do |t|
t.integer "post_a_id"...
Cannot delete directory with Directory.Delete(path, true)
...Just slap this code into your project.
public static void DeleteDirectory(string target_dir)
{
string[] files = Directory.GetFiles(target_dir);
string[] dirs = Directory.GetDirectories(target_dir);
foreach (string file in files)
{
File.SetAttributes(file, FileAttributes.Nor...
C# Events and Thread Safety
...ith every event - aka boilerplate code!
public event Action<thisClass, string> Some;
protected virtual void DoSomeEvent(string someValue)
{
var e = Some; // avoid race condition here!
if(null != e) // avoid null condition here!
e(this, someValue);
}
2 - the race condition issue) ...
Changing image size in Markdown
... or height, and the space before /> is optional, but other than that no extra whitespace is allowed). GitHub, by contrast, supports (at least) also alt and title attributes, and allows extra whitespace.
– mklement0
Jul 9 at 21:09
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Oracle TNS names not showing when adding new connection to SQL Developer
...%\tnsnames.ora before %TNS_ADMIN%\tnsnames.ora, and that's where I had the extra tnsnames.ora file.
– MBWise
Jun 30 at 14:39
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How can I check if a background image is loaded?
...s are stored. If you're referring to cache, remember that you're adding an extra HTTP request and all clients might not have cache enabled.
– HyderA
Feb 20 '11 at 17:09
7
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How to reference a file for variables using Bash?
...ext as a single parameter with space to my cntpars function. There was one extra level of evaluation required. If I wouldn't do this, as in Option 2, I would have passed 2 parameters as follows:
"value
content"
Double quoting during command execution causes the double quotes from the parameter f...
What is the purpose of python's inner classes?
... methods of the outer class — they will see the outer's self without any extra work required (just use a different identifier where you would typically put the inner's self; like innerself), and will be able to access the outer instance via that.
– Evgeni Sergeev
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