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Test for existence of nested JavaScript object key
...javascript. He settles on using the above syntax (which isn't that hard to read once you get used to it) as an idiom.
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Why is auto_ptr being deprecated?
...ct-ptr is stored in multiple data-structure and later accessed. Multiple threads, of course is another example.
unique_ptr : If all you are concerned is freeing memory, and the access to object is SEQUENTIAL, then go for unique_ptr.
By SEQUENTIAL, I mean, at any point object will be accessed from ...
How do I call Objective-C code from Swift?
...ctName#>-Swift.h"
The file:<#YourProjectName#>-Swift.h should already be created automatically in your project, even if you can not see it.
Step 3: Use your class
MySwiftObject * myOb = [MySwiftObject new];
NSLog(@"MyOb.someProperty: %@", myOb.someProperty);
myOb.someProperty = @"Hello ...
How to shrink/purge ibdata1 file in MySQL
... that is not necessary nor possible to drop. It is in fact just a bunch of read-only views, not tables. And there are no files associated with the them, not even a database directory. The informations_schema is using the memory db-engine and is dropped and regenerated upon stop/restart of mysqld. Se...
A good book for learning D3.js [closed]
...
As @Autio already mentioned, there are the tutorials from Scott Murray on his website.
You will also note that on his site, he has a link to his recent d3 book,
Interactive Data Visualization for the Web.
However, that book is now av...
Setting git parent pointer to a different parent
...the line of development.
If you're working with other people, and you've already pushed the commit in question public to where they've pulled it, modifying the commit is probably a Bad Idea™. This is due to #1, and thus the resulting confusion the other users' repositories will encounter when tryi...
What is the best way to count “find” results?
...something else with the file names in addition to counting them, you could read from the find output.
n=0
while read -r -d ''; do
((n++)) # count
# maybe perform another act on file
done < <(find <expr> -print0)
echo $n
It is just a modification of a solution found in BashGuid...
One Activity and all other Fragments [closed]
...rary so you no longer have to use the android-support-v4-googlemaps hack. Read about the update here: Google Maps Android API v2
-- EDIT 2 --
I just read this great post about the modern (2017) state of fragments and remembered this old answer. Thought I would share: Fragments: The Solution to ...
HttpClient.GetAsync(…) never returns when using await/async
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You are misusing the API.
Here's the situation: in ASP.NET, only one thread can handle a request at a time. You can do some parallel processing if necessary (borrowing additional threads from the thread pool), but only one thread would have the request context (the additional threads do not have...
Properly escape a double quote in CSV
...ash (\) and NUL (the NULL byte).
Use fputcsv() to write, and fgetcsv() to read, which will take care of all.
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