大约有 41,000 项符合查询结果（耗时：0.0483秒） [XML]
Jinja2 template variable if None Object set a default value
...According to docs you can just do:
{{ p|default('', true) }}
Cause None casts to False in boolean context.
Update: As lindes mentioned, it works only for simple data types.
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List to array conversion to use ravel() function
...your (nested, I s'pose?) list, you can do that directly, numpy will do the casting for you:
L = [[1,None,3],["The", "quick", object]]
np.ravel(L)
# array([1, None, 3, 'The', 'quick', <class 'object'>], dtype=object)
Also worth mentioning that you needn't go through numpy at all.
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How do I load an org.w3c.dom.Document from XML in a string?
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shouldn't there be casting return (Document) builder.parse(new ByteArrayInputStream(xml.getBytes()));??
– InfantPro'Aravind'
Jan 16 '13 at 14:10
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Print all day-dates between two dates [duplicate]
...print d
# you can't join dates, so if you want to use join, you need to
# cast to a string in the list comprehension:
ddd = [str(d1 + timedelta(days=x)) for x in range((d2-d1).days + 1)]
# now you can join
print "\n".join(ddd)
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Convert boolean result into number/integer
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@ESR it casts everything to a number but not always the number you want, if you're dealing with other truthy types. 1 | 0 = 1; 0 | 0 = 0; true | 0 = 1; false | 0 = 0; 'foo' | 0 = 0; undefined | 0 = 0
– Luke Mile...
How to make a query with group_concat in sql server [duplicate]
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A.maskid
, A.maskname
, A.schoolid
, B.schoolname
, CAST((
SELECT T.maskdetail+','
FROM dbo.maskdetails T
WHERE A.maskid = T.maskid
FOR XML PATH(''))as varchar(max)) as maskdetail
FROM dbo.tblmask A
JOIN dbo.school B ON B.ID = A.school...
How to convert a String to CharSequence?
...xcept that you can't assign a CharSequence to a String without an explicit cast.
– gustafc
Sep 8 '09 at 6:26
1
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How to allocate aligned memory only using the standard library?
...ast for the format string — arguably, the values should be passed with a cast: (uintptr_t)mem, (uintptr_t)ptr). The format string relies on string concatenation and the PRIXPTR macro is the correct printf() length and type specifier for hex output for a uintptr_t value. The alternative is to use %...
Convert nullable bool? to bool
...rhaps it's just VB.NET?) - I have just tested and it does throw an invalid cast exception
– Luke T O'Brien
Mar 9 '17 at 9:38
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Generate 'n' unique random numbers within a range [duplicate]
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To shuffle a range in python 3 you first need to cast it to a list: data = list(range(numLow, numHigh)), otherwise you will get an error.
– CheshireCat
Jun 5 '19 at 8:26
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