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SQL query to find record with ID not in another table
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216
Try this
SELECT ID, Name
FROM Table1
WHERE ID NOT IN (SELECT ID FROM Table2)
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For each row in an R dataframe
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105
You can try this, using apply() function
> d
name plate value1 value2
1 A P1 ...
Getting parts of a URL (Regex)
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153
A single regex to parse and breakup a
full URL including query parameters
and anchors e...
Python function attributes - uses and abuses [closed]
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154
I typically use function attributes as storage for annotations. Suppose I want to write, in th...
How to do a regular expression replace in MySQL?
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13 Answers
13
Active
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How to pass an array within a query string?
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10 Answers
10
Active
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How to check an Android device is HDPI screen or MDPI screen?
...rces().getDisplayMetrics().density;
// return 0.75 if it's LDPI
// return 1.0 if it's MDPI
// return 1.5 if it's HDPI
// return 2.0 if it's XHDPI
// return 3.0 if it's XXHDPI
// return 4.0 if it's XXXHDPI
share
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List all svn:externals recursively?
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144
Do the following in the root of your working copy:
svn propget svn:externals -R
As discusse...
Will docker container auto sync time with the host machine?
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103
If you are on OSX running boot2docker, see this issue: https://github.com/boot2docker/boot2doc...
Pointers in C: when to use the ampersand and the asterisk?
...rst element
To get the second element:
int a[2]; // array
int i = *(a + 1); // the value of the second element
int i2 = a[1]; // the value of the second element
So the [] indexing operator is a special form of the * operator, and it works like this:
a[i] == *(a + i); // these two statements a...