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Django database query: How to get object by id?
...s confusing me was that the code below executed fine and returned a result set as expected:
Class.objects.all()
Tail of the traceback for the get() method:
File "django/db/models/loading.py", line 197, in get_models
self._populate()
File "django/db/models/loading.py", line 72, in _populate
...
c# open file with default application and parameters
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Please add Settings under Properties for the Project and make use of them this way you have clean and easy configurable settings that can be configured as default
How To: Create a New Setting at Design Time
Update: after comments belo...
Default value of BOOL
...ject types like BOOL are still initialized to garbage. See Local variables set to nil? (Objective-C).)
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How to convert index of a pandas dataframe into a column?
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either:
df['index1'] = df.index
or, .reset_index:
df.reset_index(level=0, inplace=True)
so, if you have a multi-index frame with 3 levels of index, like:
>>> df
val
tick tag obs
2016-02-26 C 2 0.0139
2016-02...
Is it safe to remove selected keys from map within a range loop?
...ap source code. It looks like on a call to delete(k, v), it basically just sets a flag (as well as changing the count value) instead of actually deleting the value:
b->tophash[i] = Empty;
(Empty is a constant for the value 0)
What the map appears to actually be doing is allocating a set numbe...
Ignoring time zones altogether in Rails and PostgreSQL
...e preferred type in the date/time family, literally. It has typispreferred set in pg_type, which can be relevant:
Generating time series between two dates in PostgreSQL
Internal storage and epoch
Internally, timestamps occupy 8 bytes of storage on disk and in RAM. It is an integer value representi...
CSS table column autowidth
... This solution works well without table-layout: fixed that is set in the css in the question jsfiddle.net/hCkch/1
– David Sherret
Jul 8 '13 at 19:34
1
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Is there an equivalent of CSS max-width that works in HTML emails?
... equivalent of a centered div with max-width of 350px. You create a table, set the width to 100%. The table has three cells in a row. Set the width of the center TD to 350 (using the HTML width attribute, not CSS), and there you go.
If you want your content aligned left instead of centered, just l...
Force R to stop plotting abbreviated axis labels - e.g. 1e+00 in ggplot2
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This works by setting a higher penalty for deciding to use scientific notation. More explanation in this answer: stackoverflow.com/a/18600721/1080804
– ecoe
Jul 4 '16 at 14:09
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what is .netrwhist?
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In addition, if one sets g:netrw_dirhistmax to zero, netrw will save no history or bookmarks:
:let g:netrw_dirhistmax = 0
Doing this will not cause any prior .netrwhist or .netrwbook files to be deleted, however.
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