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JavaScript exponents
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answered Nov 18 '15 at 20:04
Salvador DaliSalvador Dali
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Set transparent background using ImageMagick and commandline prompt
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140
I am using ImageMagick 6.6.9-7 on Ubuntu 12.04.
What worked for me was the following:
convert t...
Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...系统是UNIX 操作系统的一种克隆系统。它诞生于1991 年的10 月5 日（这是第一次正式向外公布的时间...Linux 的诞生和发展
Linux 操作系统是UNIX 操作系统的一种克隆系统。它诞生于1991 年的10 月5 日（这是第一次正式向外公布的时间...
What is sys.maxint in Python 3?
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180
The sys.maxint constant was removed, since there is no longer a limit
to the value of integ...
Is it possible to for SQL Output clause to return a column not being inserted?
...Option
with
MERGE INTO ReportOption USING @ReportOption AS temp ON 1 = 0
WHEN NOT MATCHED THEN
INSERT (field1, field2)
VALUES (temp.Field1, temp.Field2)
OUTPUT temp.PracticeId, inserted.ReportOptionId, inserted.Field1, inserted.Field2
INTO @PracticeReportOption (PracticeId, Repor...
How to find the size of an array in postgresql
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Adam DingleAdam Dingle
1,54211 gold badge1010 silver badges99 bronze badges
10
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Calling shell functions with xargs
...orting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
Also, using ret...
How do I add more members to my ENUM-type column in MySQL?
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140
ALTER TABLE
`table_name`
MODIFY COLUMN
`column_name2` enum(
'existing_value1',
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Copy table without copying data
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Try:
CREATE TABLE foo SELECT * FROM bar LIMIT 0
Or:
CREATE TABLE foo SELECT * FROM bar WHERE 1=0
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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170
pandas.isnull() (also pd.isna(), in newer versions) checks for missing values in both numeric an...