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How to convert a clojure keyword into a string?
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@Hamish Perhaps by adding (source name)?
– ponzao
Sep 15 '10 at 18:05
2
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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
I'm using the PostgreSQL database for my Ruby on Rails application (on Mac OS X 10.9).
15 Answers
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mongoDB/mongoose: unique if not null
...ior of ensuring unique values but allowing multiple docs without the field by setting the sparse option to true when defining the index. As in:
email : {type: String, trim: true, index: true, unique: true, sparse: true}
Or in the shell:
db.users.ensureIndex({email: 1}, {unique: true, sparse: tr...
Which is best way to define constants in android, either static class, interface or xml resource?
... project significantly.
static final constants are compiled into the java bytecode; project resources are compiled into a binary format within the apk. Accessing either is extremely efficient... if there is a difference between the two, it is trivial at most.
There isn't a set rule on how you shou...
How to exit from the application and show the home screen?
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Android's design does not favor exiting an application by choice, but rather manages it by the OS. You can bring up the Home application by its corresponding Intent:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent....
error upon assigning Layout: BoxLayout can't be shared
... can't be shared . I've seen others with this problem, but they solved it by creating the boxlayout on the contentpane, but that is what I'm doing here. Here's my code:
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Can we set a Git default to fetch all tags during a remote pull?
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You should be able to accomplish this by adding a refspec for tags to your local config. Concretely:
[remote "upstream"]
url = <redacted>
fetch = +refs/heads/*:refs/remotes/upstream/*
fetch = +refs/tags/*:refs/tags/*
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Android : Check whether the phone is dual SIM
...SIM = telephonyInfo.isDualSIM();
TextView tv = (TextView) findViewById(R.id.tv);
tv.setText(" IME1 : " + imeiSIM1 + "\n" +
" IME2 : " + imeiSIM2 + "\n" +
" IS DUAL SIM : " + isDualSIM + "\n" +
" IS SIM1 READY : " + isSIM1Ready + "\n" +...
Multiple ModelAdmins/views for same model in Django admin
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I've found one way to achieve what I want, by using proxy models to get around the fact that each model may be registered only once.
class PostAdmin(admin.ModelAdmin):
list_display = ('title', 'pubdate','user')
class MyPost(Post):
class Meta:
proxy =...
Make: how to continue after a command fails?
...rs). The documentation seems to suggest a more robust way to achieve this, by the way:
To ignore errors in a command line, write a - at the beginning of the line's text (after the initial tab). The - is discarded before the command is passed to the shell for execution.
For example,
clean:
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