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What is an Intent in Android?
...a blast email to a bunch of friends, in which you tell your friend John to do something, or to friends who can do X ("intent filters"), to do X. The other folks will ignore the email, but John (or friends who can do X) will react to it.
To listen for an broadcast intent (like the phone ringing, or ...
How to do 3 table JOIN in UPDATE query?
...tware reports zero affected rows, although the data shows the updates were done.
– Pianoman
Feb 1 '16 at 8:06
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Concatenating Files And Insert New Line In Between Files
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You can do:
for f in *.txt; do (cat "${f}"; echo) >> finalfile.txt; done
Make sure the file finalfile.txt does not exist before you run the above command.
If you are allowed to use awk you can do:
awk 'FNR==1{print ""}1' *...
The case against checked exceptions
... his work, this argument has always struck me as bogus. It basically boils down to:
"Checked exceptions are bad because programmers just abuse them by always catching them and dismissing them which leads to problems being hidden and ignored that would otherwise be presented to the user".
By ...
How do I wrap link_to around some html ruby code?
How do I wrap a link around view code? I can't figure out how to pass multiple lines with ruby code to a single link_to method. The result I am looking for is that you click the column and get the show page:
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MySQL: Transactions vs Locking Tables
...r's account in parallel. While your code has your balance retrieved and is doing the huge_overdraft_fees() and whatnot, it's entirely possible that some other payment will be running the same type of code in parallel. They'll be retrieve your balance (say, $100), do their transactions (take out the ...
How to get number of rows using SqlDataReader in C#
...ers about this but none were clearly defined except for one that states to do a while loop with Read() method and increment a counter.
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Do I need to create indexes on foreign keys on Oracle?
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The foreign key constraint alone does not provide the index on Oracle - one must (and should) be created.
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Django: “projects” vs “apps”
...ing myproduct.myproduct? What you need to achieve that roughly consists of doing this:
django-admin.py startproject myproduct
cd myproduct
mkdir myproduct
touch myproduct/__init__.py
touch myproduct/models.py
touch myproduct/views.py
and so on. Would it help if I said views.py doesn't have to be ...
bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need
...hat this is related to the parser that BS will use to read the HTML. They document is here, but if you're like me (on OSX) you might be stuck with something that requires a bit of work:
You'll notice that in the BS4 documentation page above, they point out that by default BS4 will use the Python b...