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Multiple columns index when using the declarative ORM extension of sqlalchemy
... have to declare it, everything works the same (make sure you're on recent 0.6 or 0.7 for the declarative A.a wrapper to be interpreted as a Column after the class declaration is complete):
class A(Base):
__tablename__ = 'table_A'
id = Column(Integer, primary_key=True)
a = Column(String...
isset() and empty() - what to use
...mpty checks if the variable is set and if it is it checks it for null, "", 0, etc
Isset just checks if is it set, it could be anything not null
With empty, the following things are considered empty:
"" (an empty string)
0 (0 as an integer)
0.0 (0 as a float)
"0" (0 as a string)
NULL
FALSE
array(...
How can I append a string to an existing field in MySQL?
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answered Sep 22 '10 at 1:09
Daniel VassalloDaniel Vassallo
301k6666 gold badges475475 silver badges424424 bronze badges
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GetType() can lie?
...dFoo foo = new BadFoo();
Console.WriteLine("n1 and n2 are the same type: {0}",
Object.ReferenceEquals(n1.GetType(), foo.GetType()));
// output:
// n1 and n2 are the same type: True
so, yikes, you've successfully lied, right?
Well, yes and no... Consider that using this as an e...
URL: Username with @
...
You need to URL encode the @ as %40.
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Replace None with NaN in pandas dataframe
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140
You can use DataFrame.fillna or Series.fillna which will replace the Python object None, not the...
Moving multiple files in TFS Source Control
I'm using Team Foundation Server 2008 (SP 1) and I need to move multiple files from one folder to another (to retain file history). In addition to Team Explorer (with SP 1) I've also got the latest TFS Power Tools (October 2008) installed (for Windows Shell integration).
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Using a ListAdapter to fill a LinearLayout inside a ScrollView layout
... Your adapter.
final int adapterCount = adapter.getCount();
for (int i = 0; i < adapterCount; i++) {
View item = adapter.getView(i, null, null);
layout.addView(item);
}
EDIT: I rejected this approach when I needed to display about 200 non-trivial list items, it is very slow - Nexus 4 need...
what does npm -D flag mean?
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edited Mar 25 '18 at 2:50
Pyves
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answered Apr 2...
Prevent ViewPager from destroying off-screen views
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answered Dec 1 '11 at 22:09
David Snabel-CauntDavid Snabel-Caunt
55.4k1212 gold badges107107 silver badges132132 bronze badges
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