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Implications of foldr vs. foldl (or foldl')
... To avoid confusion, note that the parentheses do not show the actual order of evaluation. Since Haskell is lazy the outermost expressions will be evaluated first.
– Lii
Oct 29 '13 at 16:29
...
Get name of current script in Python
...lation functions, such as os.path.abspath(...) or os.path.realpath(...) in order to extract the full or real path.
However, these methods rely on the current path in order to derive the full path. Thus, if a program first changes the current working directory, for example via os.chdir(...), and only...
What are major differences between C# and Java?
... visibility in Java which takes account of namespace (and inheritance)
The order of initialization in Java and C# is subtly different (C# executes variable initializers before the chained call to the base type's constructor)
Java doesn't have properties as part of the language; they're a convention ...
PHP filesize MB/KB conversion [duplicate]
...verage ~40% slower but for 1024 and above I get consistent averages on the order of 0.1%. Interesting!
– Alix Axel
May 25 '13 at 3:55
...
How do I apply the for-each loop to every character in a String?
...
In Java 8 we can solve it as:
String str = "xyz";
str.chars().forEachOrdered(i -> System.out.print((char)i));
The method chars() returns an IntStream as mentioned in doc:
Returns a stream of int zero-extending the char values from this
sequence. Any char which maps to a surrogat...
Object-orientation in C
...the derived class. Multiple inheritance is much harder - in that case, in order to case between base classes other than the first, you need to manually adjust your pointers based on the proper offsets, which is really tricky and error-prone.
Another (tricky) thing you can do is change the dynamic ...
How can I pair socks from a pile efficiently?
...was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average.
...
accepting HTTPS connections with self-signed certificates
...server certificate". Are there any extra permissions that I have to set in order to make it work?
– Juriy
Feb 24 '11 at 21:59
1
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Dump a mysql database to a plaintext (CSV) backup from the command line
...
In MySQL itself, you can specify CSV output like:
SELECT order_id,product_name,qty
FROM orders
INTO OUTFILE '/tmp/orders.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
From http://www.tech-recipes.com/rx/1475/save-mysql-query-results-into-a-text-or-csv-fil...
Using GPU from a docker container?
...he date.
These 2 numbers are called major and minor numbers (wrote in that order) and design a device.
We will just use the major numbers for convenience.
Why do we activated lxc driver?
To use the lxc conf option that allow us to permit our container to access those devices.
The option is : (i rec...