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With MySQL, how can I generate a column containing the record index in a table?
...ows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE league_girl (position int, username varchar(10), score int);
INSERT INTO league_girl VALUES (1, 'a', 10);
INSERT INTO league_girl VALUES (2, 'b', 25);
INSERT INTO league_girl VALUES (3, 'c', 75);
INSE...
Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
...ck with the older iteratee API, but I recently verified that an equivalent test passes against the scalaz-stream API. This is a newer stream processing API that is intended to replace iteratee.
For completeness, here's the test code:
// create a stream containing `n` arrays with `sz` Ints in each ...
Unix - create path of folders and file
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@BЈовић Yes. (I do try to test things before I post them.)
– Jonathon Reinhart
Oct 10 '13 at 7:28
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各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
// 写文件
using (StreamWriter sw = new StreamWriter(@"test.txt"))
{
sw.WriteLine("file content...");
sw.Flush();
sw.Close();
}
// 读文件
using (TextReader reader = new StreamReader("test.txt"))
{
while (reader.P...
Array or List in Java. Which is faster?
...
I suggest that you use a profiler to test which is faster.
My personal opinion is that you should use Lists.
I work on a large codebase and a previous group of developers used arrays everywhere. It made the code very inflexible. After changing large chunks of ...
setup.py examples?
...
READ THIS FIRST https://packaging.python.org/en/latest/current.html
Installation Tool Recommendations
Use pip to install Python packages
from PyPI.
Use virtualenv, or pyvenv to isolate application specific dependencies from a shared Python installation.
U...
Is it possible to decompile a compiled .pyc file into a .py file?
... recent tool, aiming to unify earlier forks and focusing on automated unit testing. The GitHub page has more details.
if you use Python 3.7+, you could also try decompile3, a fork of Uncompyle6 focusing on 3.7 and higher.
do raise GitHub issues on these projects if needed - both run unit test suit...
What is the difference between --save and --save-dev?
...ave-dev is used to save the package for development purpose.
Example: unit tests, minification..
--save is used to save the
package required for the application to run.
share
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improve this answer...
How can I check that a form field is prefilled correctly using capybara?
...
If you specifically want to test for a placeholder, use:
page.should have_field("some_field_name", placeholder: "Some Placeholder")
or:
expect(page).to have_field("some_field_name", placeholder: "Some Placeholder")
If you want to test the user-ent...
How to replace a character by a newline in Vim
...minal to run it). xxd shows a hexdump of the resulting file.
echo bar > test
(echo 'Before:'; xxd test) > output.txt
vim test '+s/b/\n/' '+s/a/\r/' +wq
(echo 'After:'; xxd test) >> output.txt
more output.txt
Before:
0000000: 6261 720a bar.
After:
0000000:...