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How to set Python's default version to 3.x on OS X?
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You can solve it by symbolic link.
unlink /usr/local/bin/python
ln -s /usr/local/bin/python3.3 /usr/local/bin/python
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Downcasting shared_ptr to shared_ptr?
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You can use dynamic_pointer_cast. It is supported by std::shared_ptr.
std::shared_ptr<Base> base (new Derived());
std::shared_ptr<Derived> derived =
std::dynamic_pointer_cast<Derived> (base);
Documentation: https://en.cppreference.com/w/cp...
Git pull after forced update
...ou simply:
git checkout some-branch # where some-branch can be replaced by any other branch
git branch base-branch -D # where base-branch is the one with the squashed commits
git checkout -b base-branch origin/base-branch # recreating branch with correct commits
Note: You can combine these al...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...so that you can sort it using `sorted()`
sorted(df.values.tolist()) # Sort by key
Or:
# Sort by value:
from operator import itemgetter
sorted(df.values.tolist(), key=itemgetter(1))
[out]:
[['a', 1], ['b', 2], ['c', 3], ['d', 4], ['e', 5]]
Lastly, cast the list of list of 2 elements into a di...
Case insensitive regex in JavaScript
...reaching for "case insensitive regex", you can usually accomplish the same by just manipulating the case of the strings you are comparing:
const foo = 'HellO, WoRlD!';
const isFoo = 'hello, world!';
return foo.toLowerCase() === isFoo.toLowerCase();
I would also call this easier to read and grok the...
What's the purpose of git-mv?
...ves at a time, Git became confused and did not track the changes properly. By the way, in my experiments the same happened when I deleted/created files instead of using git mv. Proceed with care; you've been warned...
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ASP.NET MVC: Is Controller created for every request?
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A Controller is created for every request by the ControllerFactory (which by default is the DefaultControllerFactory).
http://msdn.microsoft.com/en-us/library/system.web.mvc.defaultcontrollerfactory.aspx
Note that the Html.Action Html Helper will create another con...
Suppress command line output
...works because stdout is file descriptor 1, and stderr is file descriptor 2 by convention. (0 is stdin, incidentally.) The 2>&1 copies output file descriptor 2 from the new value of 1, which was just redirected to the null device.
This syntax is (loosely) borrowed from many Unix shells, but y...
Jackson JSON custom serialization for certain fields
...rties can be serialize which are needful for client only
Define our Views by simply creating following class:
public class Views
{
static class Android{};
static class IOS{};
static class Web{};
}
Annotated model class with views:
public class Demo
{
public Demo()
{
}
...
How to assign a Git SHA1's to a file without Git?
...mpute it yourself without having Git installed. Note that "\0" is the NULL-byte, not a two-character string.
For example, the hash of an empty file:
sha1("blob 0\0") = "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
$ touch empty
$ git hash-object empty
e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
Anoth...