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Changing the maximum length of a varchar column?
...'m trying to update the length of a varchar column from 255 characters to 500 without losing the contents. I've dropped and re-created tables before but I've never been exposed to the alter statement which is what I believe I need to use to do this. I found the documentation here: ALTER TABLE (Tran...
AsyncTask Android example
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704
Ok, you are trying to access the GUI via another thread. This, in the main, is not good practic...
Android 4.3 Bluetooth Low Energy unstable
...hread on Samsung Galaxy S3 with Android 4.3 (at least for build JSS15J.I9300XXUGMK6)
Most devices filter advertising
Better not use android.bluetooth.BluetoothAdapter#startLeScan(UUID[] serviceUuids, LeScanCallback callback) with the parameter to filter for certain service UUIDs because this is bro...
JavaScript displaying a float to 2 decimal places
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How can I get the external SD card path for Android 4.0+?
...eam is = process.getInputStream();
final byte[] buffer = new byte[1024];
while (is.read(buffer) != -1) {
s = s + new String(buffer);
}
is.close();
} catch (final Exception e) {
e.printStackTrace();
}
// parse output
final String[] ...
What is the correct way to start a mongod service on linux / OS X?
... mongodb
==> Downloading https://homebrew.bintray.com/bottles/mongodb-3.0.6.yosemite.bottle.tar.gz ### 100.0%
==> Pouring mongodb-3.0.6.yosemite.bottle.tar.gz
==> Caveats
To have launchd start mongodb at login:
ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
Then to load mon...
Get the date (a day before current time) in Bash
... GNU date and i understood you correctly
$ date +%Y:%m:%d -d "yesterday"
2009:11:09
or
$ date +%Y:%m:%d -d "1 day ago"
2009:11:09
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Finding duplicate rows in SQL Server
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answered Jan 21 '10 at 20:32
RedFilterRedFilter
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Check if the number is integer
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Another alternative is to check the fractional part:
x%%1==0
or, if you want to check within a certain tolerance:
min(abs(c(x%%1, x%%1-1))) < tol
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open() in Python does not create a file if it doesn't exist
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830
You should use open with the w+ mode:
file = open('myfile.dat', 'w+')
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