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How to select only the first rows for each unique value of a column
...
CName
If you want the first according to, say, an "inserted" column then it's a different query
SELECT
M.CName, M.AddressLine,
FROM
(
SELECT
CName, MIN(Inserted) AS First
FROM
MyTable
GROUP BY
CName
) foo
JOIN
MyTable M ON foo.CName = M...
Trust Anchor not found for Android SSL Connection
... have to connect to a server from 3 clients (Android, iOS, Windows Mobile) then I have to apply the workaround on all 3, whereas I can fix the server once and they will all "just work".
– Stevie
Apr 30 '13 at 16:18
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Android: When is onCreateOptionsMenu called during Activity lifecycle?
...
I found if in onResume() I call
invalidateOptionsMenu();
then onCreateOptionsMenu(Menu menu) is called afterward - as per the activity life cycle (I think that's the correct term here), as indicated by @tir38
@Override
public void onResume() {
super.onResume();
invalidateO...
How to add /usr/local/bin in $PATH on Mac
...ath_helper, called from the default /etc/profile. Start at man path_helper then add your paths in files in /etc/paths.d. You will find that pretty much every path setting example from other OSs includes $PATH because none of them seem to be able to commit to being the first one in the chain...
...
Linux find file names with given string
... Creating a custom bash script with #!/bin/bash if [ -z $1 ]; then echo "Error: Specify pattern for search"; else /usr/bin/find . -type f -name "*$1*"; fi would let you just run F search-string as a perfect shortcut
– Ilia Rostovtsev
Jul 29 '15 a...
How to store a git config as part of the repository?
...onfig
│
Create the .gitconfig with your filter and commit the changes. Then your colleagues will always keep it updated -- but they will have to include it manually. It is not possible to automatically include your custom configuration file through git alone, because it creates a security vulner...
In Python, how do I indicate I'm overriding a method?
...te override(f) in such a way that is actually checks for an override.
But then, this is Python, why write it like it was Java?
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What is the difference between float and double?
...a calculation and the result is an irrational number or recurring decimal, then there will be rounding errors when that number is squashed into the finite size data structure you're using. Since double is twice the size of float then the rounding error will be a lot smaller.
The tests may specifica...
convert pfx format to p12
...lways working because. for example if you use SoapUI and test it a 2-way authentication it fails. p12 & pfx have history back to Netscape & IE. they are ALMOST the same but not identical files. so some apps can understand both regardless of extension and others need a 100% compatible valid p...
Rails nested form with has_many :through, how to edit attributes of join model?
... trick was:
@topic.linkers.build.build_article
That builds the linkers, then builds the article for each linker. So, in the models:
topic.rb needs accepts_nested_attributes_for :linkers
linker.rb needs accepts_nested_attributes_for :article
Then in the form:
<%= form_for(@topic) do |topic_fo...