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PHP - concatenate or directly insert variables in string
...e!\n");' (Concatenation) actually loses by about 300 milliseconds (for 200.000 items, that's 1 miliseconf per thousand elements on your set...). That's statistical noise, it's impossible to even measure any difference. Considering it's more readable, time php -r '$string=""; for ($i=0;$i<199999;...
Make copy of an array
... answers here. In that set up, clone() turns out to be the fastest for 250 000 elements.
– Adam
Mar 23 '14 at 5:16
7
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Android: combining text & image on a Button or ImageButton
...p"
android:text="AndroidDhina"
android:textColor="#000"
android:textStyle="bold" />
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Delete duplicate rows from small table
...Tried rapimo's solution and it completed in about 10 seconds (deleted ~700,000 rows).
– Patrick
Jun 8 at 1:49
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Remove duplicates from a List in C#
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its unbelievable fast... 100.000 strings with List takes 400s and 8MB ram, my own solution takes 2.5s and 28MB, hashset takes 0.1s!!! and 11MB ram
– sasjaq
Mar 25 '13 at 22:28
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How to select date from datetime column?
... indexed column is high. These are some test results on a table with 1,176,000 rows:
using datetime LIKE '2009-10-20%' => 2931ms
using datetime >= '2009-10-20 00:00:00' AND datetime <= '2009-10-20 23:59:59' => 168ms
When doing a second call over the same query the difference is even ...
Typing Enter/Return key using Python and Selenium?
...xt. These are stored in the Unicode PUA (Private Use Area) code points, 0xE000-0xF8FF.
Key Codes :
The special keys codes for them are as follows :
RETURN = u'\ue006'
ENTER = u'\ue007'
The implementation of all the Enum Keys are handled the same way.
Hence these is No Functional or Operation...
Downloading an entire S3 bucket?
...nd Cyberduck, but for me awscli was by far the fastest way to download ~70.000 files from my bucket.
– Arjen
Aug 22 '14 at 7:46
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How to calculate the number of occurrence of a given character in each row of a column of strings?
...ternally.
Here's benchmark results (with a scaled up size of the test to 3000 rows)
q.data<-q.data[rep(1:NROW(q.data), 1000),]
str(q.data)
'data.frame': 3000 obs. of 3 variables:
$ number : int 1 2 3 1 2 3 1 2 3 1 ...
$ string : Factor w/ 3 levels "greatgreat","magic",..: 1 2 3 ...
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
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Connection con = DriverManager.getConnection(
"jdbc:mysql://192.100.0.000:3306/DBname", "root", "root");
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