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sqlalchemy IS NOT NULL select
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column_obj != None will produce a IS NOT NULL constraint:
In a column context, produces the clause a != b. If the target is None, produces a IS NOT NULL.
or use isnot() (new in 0.7.9):
Implement the IS NOT operator.
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Go Error Handling Techniques [closed]
...onad, if you squint at it a bit. Comparing it to en.wikipedia.org/wiki/Null_Object_pattern is more useful, I think.
– user7610
Jan 17 '16 at 18:48
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Python: Find in list
...n or generator expressions for that:
matches = [x for x in lst if fulfills_some_condition(x)]
matches = (x for x in lst if x > 6)
The latter will return a generator which you can imagine as a sort of lazy list that will only be built as soon as you iterate through it. By the way, the first one...
Django filter versus get for single object?
...alled django-annoying and then do this:
from annoying.functions import get_object_or_None
obj = get_object_or_None(MyModel, id=1)
if not obj:
#omg the object was not found do some error stuff
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Command-line Tool to find Java Heap Size and Memory Used (Linux)?
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@jumping_monkey not indirect, incorrect. If what you're saying is true, the answer should be edited or you should feel free to add a new answer.
– Madbreaks
Dec 20 '19 at 17:58
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MFC Grid control 2.27 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...ol OLE drag and drop target. Only necessary if you don't define GRIDCONTROL_NO_DRAGDROP in gridctrl.h
Titletip.cpp, Titletip.h
Titletips for cells, from Zafir Anjum. Only necessary if you don't define GRIDCONTROL_NO_TITLETIPS in gridctrl.h
Structure
The grid is based on...
How to avoid warning when introducing NAs by coercion
... na = x %in% na.strings
x[na] = 0
x = as.numeric(x)
x[na] = NA_real_
x
}
as.num(c("1", "2", "X"), na.strings="X")
#[1] 1 2 NA
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Javascript fuzzy search that makes sense
... asked for though. Also, this can be expensive if the list is massive.
get_bigrams = (string) ->
s = string.toLowerCase()
v = new Array(s.length - 1)
for i in [0..v.length] by 1
v[i] = s.slice(i, i + 2)
return v
string_similarity = (str1, str2) ->
if str1.length &...
What does the “@” symbol mean in reference to lists in Haskell?
...r any constructor; if you have data Tree a = Tree a [Tree a], then t@(Tree _ kids) gives you access to both the tree and its children.
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Git Blame Commit Statistics
...git-fame that might be useful.
Installation and usage:
$ gem install git_fame
$ cd /path/to/gitdir
$ git fame
Output:
Statistics based on master
Active files: 21
Active lines: 967
Total commits: 109
Note: Files matching MIME type image, binary has been ignored
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