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What do the makefile symbols $@ and $< mean?
..., clarify.
– DrBeco
Jul 10 '15 at 6:05
Yes, it will include both hello.c and hello.h
– dexterous...
getting date format m-d-Y H:i:s.u from milliseconds
...format("m-d-Y H:i:s.u");
This produces the following output:
04-13-2015 05:56:22.082300
From the PHP manual page for date formats:
U = Seconds since the Unix Epoch
u = Microseconds
http://php.net/manual/en/function.date.php
Thanks goes to giggsey for pointing out a flaw in my original an...
Having both a Created and Last Updated timestamp columns in MySQL 4.0
...t; update test_table set id = 3 where id = 2;
Query OK, 1 row affected (0.05 sec) Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from test_table;
+----+---------------------+---------------------+
| id | stamp_created | stamp_updated |
+----+---------------------+------...
git stash -> merge stashed change with current changes
...are also changed in the working copy, in which case you would've seen this error message:
error: Your local changes to the following files would be overwritten by merge:
file.txt
Please, commit your changes or stash them before you can merge.
Aborting
In that case, you can't apply the stas...
Excel “External table is not in the expected format.”
...code shown below. I get an "External table is not in the expected format." error unless I have the file already open in Excel. In other words, I have to open the file in Excel first before I can read if from my C# program. The xlsx file is on a share on our network. How can I read the file without h...
Python unit test with base and sub class
...I think the setUpClass method below is the best and is less prone to human error. Either that or wrapping the BaseTest class in a container class which is a bit more hacky but avoids the skip message in the test run printout.
– David Sanders
Oct 17 '14 at 16:2...
How to normalize a NumPy array to within a certain range?
...erently. E.g. interpolate the value, replacing in with e.g. 0, or raise an error.
Finally, worth mentioning even if it's not OP's question, standardization:
e = (a - np.mean(a)) / np.std(a)
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How do I specify the Linq OrderBy argument dynamically?
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When I try this I get the error: LINQ to Entities does not recognize the method 'System.Object GetValue(System.Object, System.Object[])' method, and this method cannot be translated into a store expression. Does this answer only apply to Linq To SQL?
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When is null or undefined used in JavaScript? [duplicate]
... // false
z.xyz === undefined // true
null = 1; // throws error: invalid left hand assignment
undefined = 1; // works fine: this can cause some problems
So this is definitely one of the more subtle nuances of JavaScript. As you can see, you can override the value of undefine...
Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib
...
I was getting the exact same error, but the above answers didn't work for me. I had to reinstall postgresql.
brew reinstall postgresql
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