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MySQL: how to get the difference between two timestamps in seconds
Is there a way I can make a query in MySQL that will give me the difference between two timestamps in seconds, or would I need to do that in PHP? And if so, how would I go about doing that?
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How to get a reference to a module inside the module itself?
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except for this won't be quite correct if module is reloaded; I don't think there's any place where a reference is guaranteed to be kept, if there was, reloading wouldn't really work, right?
– Dima Tisnek
Jan 8 '13 at 22:05
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How do I convert an integer to string as part of a PostgreSQL query?
...o conforms to the SQL standard syntax
myint = cast ( mytext as int8)
If you have literal text you want to compare with an int, cast the int to text:
SELECT * FROM table
WHERE myint::varchar(255) = mytext
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Why does pylint object to single character variable names?
...n [customer_address for customer_address in thing.get_customer_addresses() if customer_address.is_proper()] vs return [a for a in thing.get_customer_addresses() if a.is_proper()] I claim the latter is more clear, as a is obvious from the context. In general, variable length should correlate ...
Command-line Unix ASCII-based charting / plotting tool
...tStyleString+@oc["MiscOptions"]
com=com+"set multiplot;\n" if doMultiPlot
+ com=com+"set terminal dumb;\n"
com=com+"plot "+@oc["Range"]+comString+"\n'| gnuplot -persist"
printAndRun(com)
# ---- convert to PDF
An example ...
Eclipse menus don't show up after upgrading to Ubuntu 13.10
...ipse 4.3.0, menus were not visible.
So I realise that it might be helpful if I clarify myself, the desktop shortcut file for Eclipse would contain something like this:
[Desktop Entry]
Version=4.3.0
Name=Eclipse
Comment=IDE for all seasons
#Exec=/home/USERNAME/Dokument/eclipse/eclipse
Exec=env UBUN...
How do I return multiple values from a function? [closed]
...ong lists of tuples, such as results of DB queries). For individual items (if the function in question is not called often) dictionaries and classes are just fine as well. But namedtuples are a nice/nicer solution in this case as well.
– Lutz Prechelt
Feb 23 '1...
How to update maven repository in Eclipse?
... while preserving your .project settings and other eclipse config files.
If you want to clear your old settings for whatever reason, you can run:
mvn eclipse:clean
mvn eclipse:eclipse
mvn eclipse:clean will erase your old settings, then mvn eclipse:eclipse will create new .project, .classpath a...
Open a project in a new window in IntelliJ after “accidentally” clicking remember decision
...w - at least on Windows, running IntelliJ 14.0.3 Community edition. Useful if you only want to open a new window from time to time... :)
Unfortunately, this doesn't work with File > Open...
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Best way to implement Enums with Core Data
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You'll have to create custom accessors if you want to restrict the values to an enum. So, first you'd declare an enum, like so:
typedef enum {
kPaymentFrequencyOneOff = 0,
kPaymentFrequencyYearly = 1,
kPaymentFrequencyMonthly = 2,
kPaymentFrequenc...