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Python, compute list difference
...t case on lists with ~6000 strings each showed that this method was almost 100x faster than list comprehensions.
– perrygeo
Feb 1 '14 at 17:01
15
...
Limit Decimal Places in Android EditText
...ttern mPattern;
private static final int DIGITS_BEFORE_ZERO_DEFAULT = 100;
private static final int DIGITS_AFTER_ZERO_DEFAULT = 100;
public DecimalDigitsInputFilter(Integer digitsBeforeZero, Integer digitsAfterZero) {
this.mDigitsBeforeZero = (digitsBeforeZero != null ? digitsBefor...
Add text to Existing PDF using Python
... Reportlab
can = canvas.Canvas(packet, pagesize=letter)
can.drawString(10, 100, "Hello world")
can.save()
#move to the beginning of the StringIO buffer
packet.seek(0)
new_pdf = PdfFileReader(packet)
# read your existing PDF
existing_pdf = PdfFileReader(file("original.pdf", "rb"))
output = PdfFileWr...
What's the difference between RANK() and DENSE_RANK() functions in oracle?
...ay with to see what happens:
with q as (
select 10 deptno, 'rrr' empname, 10000.00 sal from dual union all
select 11, 'nnn', 20000.00 from dual union all
select 11, 'mmm', 5000.00 from dual union all
select 12, 'kkk', 30000 from dual union all
select 10, 'fff', 40000 from dual union all
select 10, ...
Sql Server string to date conversion
...etime
select @d = getdate()
select @d as OriginalDate,
convert(varchar,@d,100) as ConvertedDate,
100 as FormatValue,
'mon dd yyyy hh:miAM (or PM)' as OutputFormat
union all
select @d,convert(varchar,@d,101),101,'mm/dd/yy'
union all
select @d,convert(varchar,@d,102),102,'yy.mm.dd'
union all
select @...
Random record in ActiveRecord
...order method provided by your database, i.e. Thing.order("RANDOM()").limit(100) for 100 randomly selected entries. (Be aware that it's RANDOM() in PostgreSQL and RAND() in MySQL ... not as portable as you may want it to be.)
– Florian Pilz
Jun 16 '11 at 13:17
...
Fastest way to check if a file exist using standard C++/C++11/C?
...
Well I threw together a test program that ran each of these methods 100,000 times, half on files that existed and half on files that didn't.
#include <sys/stat.h>
#include <unistd.h>
#include <string>
#include <fstream>
inline bool exists_test0 (const std::string&...
What is the difference between an expression and a statement in Python?
...
Sven MarnachSven Marnach
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...
Does Firefox support position: relative on table elements?
...>
<tbody>
<tr>
<td style="width: 100px; height: 100px; background-color: red; position: relative">
<div style="width: 10px; height: 10px; background-color: green; position: absolute; top: 10px; right: 10px"></div>
&...
Does JavaScript have a built in stringbuilder class?
..."join".
In IE8, both return about equal results.
In IE7, "join" is about 100 times faster unfortunately.
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