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Get selected subcommand with argparse
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edited Jun 6 '14 at 14:01
Pigueiras
16.8k99 gold badges5757 silver badges8383 bronze badges
answered ...
Why were pandas merges in python faster than data.table merges in R in 2012?
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120
It looks like Wes may have discovered a known issue in data.table when the number of unique stri...
Requests — how to tell if you're getting a 404
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320
Look at the r.status_code attribute:
if r.status_code == 404:
# A 404 was issued.
Demo:
...
How to use background thread in swift?
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Swift 3.0+
A lot has been modernized in Swift 3.0. Running something on the background thread looks like this:
DispatchQueue.global(qos: .background).async {
print("This is run on the background queue")
DispatchQueue.main....
is it possible to select EXISTS directly as a bit?
...o, you'll have to use a workaround.
If you must return a conditional bit 0/1 another way is to:
SELECT CAST(
CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1
ELSE 0
END
AS BIT)
Or without the cast:
SELECT
CASE
WHEN EXISTS( SELECT 1 FROM the...
How to customize a requirements.txt for multiple environments?
...:
common.txt:
# Contains requirements common to all environments
req1==1.0
req2==1.0
req3==1.0
...
dev.txt:
# Specifies only dev-specific requirements
# But imports the common ones too
-r common.txt
dev_req==1.0
...
prod.txt:
# Same for prod...
-r common.txt
prod_req==1.0
...
Outside of He...
Reference alias (calculated in SELECT) in WHERE clause
... - CreditTotal) AS BalanceDue
FROM Invoices
) AS x
WHERE BalanceDue > 0;
Or just repeat the expression:
SELECT (InvoiceTotal - PaymentTotal - CreditTotal) AS BalanceDue
FROM Invoices
WHERE (InvoiceTotal - PaymentTotal - CreditTotal) > 0;
I prefer the latter. If the expression is extre...
mysql command for showing current configuration variables
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answered Sep 29 '09 at 16:53
code_burgarcode_burgar
10.7k44 gold badges3030 silver badges5252 bronze badges
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Mongodb Explain for Aggregation framework
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Starting with MongoDB version 3.0, simply changing the order from
collection.aggregate(...).explain()
to
collection.explain().aggregate(...)
will give you the desired results (documentation here).
For older versions >= 2.6, you will need to use th...
How do i instantiate a JAXBElement object?
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edited Dec 9 '10 at 21:44
Damo
10.9k55 gold badges5151 silver badges7272 bronze badges
answer...