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How can I export tables to Excel from a webpage [closed]
...
+100
Far and away, the cleanest, easiest export from tables to Excel is Jquery DataTables Table Tools plugin. You get a grid that sorts,...
How to find the length of a string in R
... uq max neval
nchar(x) 11.868 12.776 13.1590 13.6475 41.815 100
str_length(x) 30.715 33.159 33.6825 34.1360 173.400 100
stri_length(x) 2.653 3.281 4.0495 4.5380 19.966 100
and also works fine with NA's
nchar(NA)
## [1] 2
stri_length(NA)
## [1] NA
...
What is the easiest way to ignore a JPA field during persistence?
... @PostLoad
private void postLoad() {
this.dollars = cents / 100D;
long months = createdOn.toLocalDateTime()
.until(LocalDateTime.now(), ChronoUnit.MONTHS);
double interestUnrounded = ( ( interestRate / 100D ) * cents * months ) / 12;
this.interestC...
How to split/partition a dataset into training and test datasets for, e.g., cross validation?
...ck of the indices:
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
numpy.random.shuffle(x)
training, test = x[:80,:], x[80:,:]
or
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
indices = numpy.random.permutation(x.shape[0])
training_idx, test_idx = indices[:80], in...
Stack Memory vs Heap Memory [duplicate]
...o access any memory available to the process.
– user2100815
Apr 29 '11 at 20:06
@unapersson: The RAM is the RAM, and t...
How do I search an SQL Server database for a string?
...chemaName sysname, TableName sysname, ColumnName SysName, DataType VARCHAR(100), DataFound BIT)
INSERT INTO @Temp(TableName,SchemaName, ColumnName, DataType)
SELECT C.Table_Name,C.TABLE_SCHEMA, C.Column_Name, C.Data_Type
FROM Information_Schema.Columns AS C
INNER Join I...
Schema for a multilanguage database
...L field in the database.
e.g
-- CREATE TABLE MyTable(myfilename nvarchar(100) NULL, filemeta xml NULL )
;WITH CTE AS
(
-- INSERT INTO MyTable(myfilename, filemeta)
SELECT
'test.mp3' AS myfilename
--,CONVERT(XML, N'<?xml version="1.0" encoding="utf-16" ...
Why doesn't await on Task.WhenAll throw an AggregateException?
... }
}
}
public async Task<int> A()
{
await Task.Delay(100);
throw new Exception("A");
}
public async Task<int> B()
{
await Task.Delay(100);
throw new Exception("B");
}
The key is to save a reference to the aggregate task before you await it, then you can acc...
What to do Regular expression pattern doesn't match anywhere in string?
...ailing test cases (left :): I’ve successfully run this code on more than 100,000 HTML files — every single one I could quickly and easily get my hands on. Beyond those, I’ve also run it on files specifically constructed to break naïve parsers.
This is not a naïve parser.
Oh, I’m sure it is...
How to read data when some numbers contain commas as thousand separator?
...nvert the string to numeric using as.numeric:
y <- c("1,200","20,000","100","12,111")
as.numeric(gsub(",", "", y))
# [1] 1200 20000 100 12111
This was also answered previously on R-Help (and in Q2 here).
Alternatively, you can pre-process the file, for instance with sed in unix.
...