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Postgres: INSERT if does not exist already
...modifies the table such that more columns are unique. In that case all the scripts must be modified. It would be nice if there was a more generic way to do this...
– Willem Van Onsem
Aug 1 '14 at 13:17
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How to know if two arrays have the same values
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Using typescript the Array.isArray() was causing errors, removing that it worked fine.
– Ariel Frischer
Jul 1 at 4:41
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How to run Conda?
...n is to run
Unix/Linux
./anaconda3/bin/conda init
Windows
./anaconda3/Scripts/conda.exe init
You must launch a new shell or source your init file (e.g., source .bashrc) for the changes to take effect.
Word of Caution
This feature remains experimentally supported. I'd recommend running the...
How to determine whether a given Linux is 32 bit or 64 bit?
...so there is a packaging tool that outputs it for other packaging tools and scripts to use, called dpkg-architecture. It includes both what it's configured to build for, as well as the current host. (Normally these are the same though.) Example output on a 64-bit machine:
DEB_BUILD_ARCH=amd64
DEB_B...
Measuring elapsed time with the Time module
... that want better formatting,
import time
start_time = time.time()
# your script
elapsed_time = time.time() - start_time
time.strftime("%H:%M:%S", time.gmtime(elapsed_time))
will print out, for 2 seconds:
'00:00:02'
and for 7 minutes one second:
'00:07:01'
note that the minimum time unit wi...
Rank items in an array using Python/NumPy, without sorting array twice
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@naught101: There is a bug in your script. The line array = np.random.rand(10) should be array = np.random.rand(n).
– Warren Weckesser
Aug 18 '15 at 3:25
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How to lock compiled Java classes to prevent decompilation?
...+1 for "Locks are for animals". I guess the appropriate term here would be script kiddies.
– Antimony
Apr 1 '13 at 2:11
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Passing additional variables from command line to make
...bles are not inherited from environment:
MAKE is gotten from name of the script
SHELL is either set within a makefile, or defaults to /bin/sh (rationale: commands are specified within the makefile, and they're shell-specific).
From command line - make can take variable assignments as part of his ...
How can I print the contents of a hash in Perl?
...MikeKulls, np. It's a source filter, so I understand. Also, having written scripts that check every module that I put into production prep that it doesn't use Smart::Comments, I see it from that perspective too. But to the counter, Smart::Comments is pretty well behaved as a scoped module, there sho...
Format a number as 2.5K if a thousand or more, otherwise 900
...otherwise if under a thousand, display normal 500, 100, 250 etc, using javascript to format the number?
29 Answers
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