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What is a columnar database?
...print, highly compressible distribution of data, or spare matrix emulation etc.) rather than provide a general purpose column-oriented DBMS per-se.
Note: The remark about the "single purpose orientation" of several columnar DBMSes is not a critique of these implementations, but rather an additiona...
Regex to check whether a string contains only numbers [duplicate]
... True. It also doesn't handle real numbers, complex numbers, quaternions, etc. The question related to counting numbers and so does my answer.
– Mike Samuel
May 27 '15 at 16:59
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How can I reset or revert a file to a specific revision?
...oo to HEAD. You can also:
git checkout HEAD^ foo
for one revision back, etc.
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Rebuild IntelliJ project indexes
IntelliJ IDEA 10.5.1 is reporting zero usages for all method, classes etc.
2 Answers
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Merge (with squash) all changes from another branch as a single commit
...sier to identify and manage commits as individual patches, cards, stories, etc.
– Ryan
Oct 3 '14 at 22:59
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Unloading classes in java?
...t.
Done right there should not come a ClassCastException or LinkageError etc.
For more informations about class loader hierarchies (yes, that's exactly what you are implementing here ;- ) look at "Server-Based Java Programming" by Ted Neward - that book helped me implementing something very simil...
Pythonic way to find maximum value and its index in a list?
...function lambda x: a[x], which says that 0 is actually 2, 1 is actually 9, etc.
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Django: Get list of model fields?
...l try to update you on Django 2.2
Here posts- your app (posts, blog, shop, etc.)
1) From model link: https://docs.djangoproject.com/en/stable/ref/models/meta/
from posts.model import BlogPost
all_fields = BlogPost._meta.fields
#or
all_fields = BlogPost._meta.get_fields()
Note that:
all_fields=Blog...
get NSDate today, yesterday, this Week, last Week, this Month, last Month… variables
...th and date:
(gdb) po today
2010-06-22 00:00:00 +0200
To get yesterday, etc. you can calculate it using NSDateComponents:
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay:-1];
NSDate *yesterday = [cal dateByAddingComponents:components toDate:today options:0];
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Is there a way to change the environment variables of another process in Unix?
...hich calls for one of the IPC methods (shared memory, semaphores, sockets, etc.). Having received data by one of these methods you could then set environment variables or perform other actions more directly.