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Elegant way to invert a map in Scala
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@dev-null I'm sorry, but your example does not fall under the required assumption.
– Daniel C. Sobral
May 2 '19 at 17:01
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SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
...L Certificate Authority (CA) bundle. You can do this with:
sudo port install curl-ca-bundle [if you are using MacPorts]
or just pull it down directly wget http://curl.haxx.se/ca/cacert.pem
Execute the ruby code that is trying to verify the SSL certification: SSL_CERT_FILE=/opt/local/etc/certs/ca...
Function return value in PowerShell
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PowerShell has really wacky return semantics - at least when viewed from a more traditional programming perspective. There are two main ideas to wrap your head around:
All output is captured, and returned
The return keyword really just indi...
How do I spool to a CSV formatted file using SQLPLUS?
...tion on IDs)
spool myfile.csv
select table_name, tablespace_name
from all_tables
where owner = 'SYS'
and tablespace_name is not null;
Output will be like:
TABLE_PRIVILEGE_MAP ,SYSTEM
SYSTEM_PRIVILEGE_MAP ,SYSTEM
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DDD - the rule that Entities can't access Repositories directly
... is separation of concerns and good layering. This doesn't make sense on small projects, but if you're on a large team you want to say, "You access a product through the Product Repository. Product is an aggregate root for a collection of entities, including the ProductCatalog object. If you want to...
Can I zip more than two lists together in Scala?
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Scala treats all of its different tuple sizes as different classes (Tuple1, Tuple2, Tuple3, Tuple4,...,Tuple22) while they do all inherit from the Product trait, that trait doesn't carry enough information to actually use the data values ...
Objective-C : BOOL vs bool
..., you can assume that BOOL is a char. You can use the (C99) bool type, but all of Apple's Objective-C frameworks and most Objective-C/Cocoa code uses BOOL, so you'll save yourself headache if the typedef ever changes by just using BOOL.
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Why is Python 3.x's super() magic?
In Python 3.x, super() can be called without arguments:
1 Answer
1
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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)
...lizing) unless the result needs to be "stringified". Gcc has features but ALL can be done with plain C version 1 (and some argue Berkeley 4.3 C is so much faster it's worth learning how to use).
**Clang (llvm) DOES NOT DO WHITE SPACE CORRECTLY for macro expansion - it adds whitespace (which certai...
Reading a simple text file
I am trying to read a simple text file in my sample Android Application. I am using the below written code for reading the simple text file.
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