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Eclipse cannot load SWT libraries
...Ubuntu 12.04 64 bit try:
ln -s /usr/lib/jni/libswt-* ~/.swt/lib/linux/x86_64/
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How to manually expand a special variable (ex: ~ tilde) in bash
...
+1 -- I was needing to expand ~$some_other_user and eval works fine when $HOME will not work because I don't need the current user home.
– olivecoder
Sep 10 '13 at 11:30
...
How to implement the factory method pattern in C++ correctly
...ude <memory>
class FactoryReleaseOwnership{
public:
std::unique_ptr<Foo> createFooInSomeWay(){
return std::unique_ptr<Foo>(new Foo(some, args));
}
};
// Factory retains object ownership
// Thus returning a reference.
#include <boost/ptr_container/ptr_vector.hpp&...
Print number of keys in Redis
... use info keyspace directly on the redis-cli.
redis> INFO
# Server
redis_version:6.0.6
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:b63575307aaffe0a
redis_mode:standalone
os:Linux 5.4.0-1017-aws x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:9.3.0
...
How to print the contents of RDD?
....
// For implicit conversion from RDD to DataFrame
import spark.implicits._
fruits = sc.parallelize([("apple", 1), ("banana", 2), ("orange", 17)])
// convert to DF then show it
fruits.toDF().show()
This will show the top 20 lines of your data, so the size of your data should not be an issue.
+...
How do you produce a .d.ts “typings” definition file from an existing JavaScript library?
... change all the extensions to .ts.
Get-ChildItem | foreach { Rename-Item $_ $_.Name.Replace(".js", ".ts") }
Second, use the TypeScript compiler to generate definition files. There will be a bunch of compiler errors, but we can ignore those.
Get-ChildItem | foreach { tsc $_.Name }
Finally, com...
specify project file of a solution using msbuild
...ains any of the characters %, $, @, ;, ., (, ), or ', replace them with an _ in the specified target name.
You can also build multiple projects at once:
msbuild test.sln /t:project;project2 /p:Configuration="Release" /p:Platform="x86" /p:BuildProjectReferences=false
To rebuild or clean, change ...
Python set to list
...k that you didn't overwrite list by accident:
>>> assert list == __builtins__.list
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How to get the concrete class name as a string? [duplicate]
...
instance.__class__.__name__
example:
>>> class A():
pass
>>> a = A()
>>> a.__class__.__name__
'A'
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Ways to implement data versioning in MongoDB
...nt contain a dictionary of time-stamped diffs. Something like this:
{
_id : "id of address book record",
changes : {
1234567 : { "city" : "Omaha", "state" : "Nebraska" },
1234568 : { "city" : "Kansas City", "state" : "Missouri" }
}
}
To make...
