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How to export table as CSV with headings on Postgresql?
...ry from the command line.
psql -U user -d db_name -c "Copy (Select * From foo_table LIMIT 10) To STDOUT With CSV HEADER DELIMITER ',';" > foo_data.csv
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google chrome extension :: console.log() from background page?
... page, you can just do:
chrome.extension.getBackgroundPage().console.log('foo');
To make it easier to use:
var bkg = chrome.extension.getBackgroundPage();
bkg.console.log('foo');
Now if you want to do the same within content scripts you have to use Message Passing to achieve that. The reason, ...
ScalaTest in sbt: is there a way to run a single test without tags?
...(since ScalaTest 2.1.3) within interactive mode:
testOnly *MySuite -- -z foo
to run only the tests whose name includes the substring "foo".
For exact match rather than substring, use -t instead of -z.
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Escape quotes in JavaScript
...r display = document.getElementById('output');
var str = 'class="whatever-foo__input" id="node-key"';
display.innerHTML = str.replace(/[\""]/g, '\\"');
//will return class=\"whatever-foo__input\" id=\"node-key\"
<span id="output"></span>
...
How do I find numeric columns in Pandas?
... 10),
'B': np.random.rand(3),
'C': ['foo','bar','baz'],
'D': ['who','what','when']})
df
# A B C D
# 0 7 0.704021 foo who
# 1 8 0.264025 bar what
# 2 9 0.230671 baz when
df_numerics_only = df.select_dtypes(includ...
How do I get a file name from a full path with PHP?
...t/manual/en/splfileinfo.getfilename.php
$info = new SplFileInfo('/path/to/foo.txt');
var_dump($info->getFilename());
o/p: string(7) "foo.txt"
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Rename multiple files in a directory in Python [duplicate]
...ve a file or a directory.
$ ls
cheese_cheese_type.bar cheese_cheese_type.foo
$ python
>>> import os
>>> for filename in os.listdir("."):
... if filename.startswith("cheese_"):
... os.rename(filename, filename[7:])
...
>>>
$ ls
cheese_type.bar cheese_type.foo
...
How do I rename a column in a database table using SQL?
...o it with regular ALTER TABLE statement:
=> SELECT * FROM Test1;
id | foo | bar
----+-----+-----
2 | 1 | 2
=> ALTER TABLE Test1 RENAME COLUMN foo TO baz;
ALTER TABLE
=> SELECT * FROM Test1;
id | baz | bar
----+-----+-----
2 | 1 | 2
...
Block Comments in Clojure
...ure. It doesn't work with arbitrary text. For example, (comment "print("/foo")") will die with the error Invalid token: /foo.
– John Wiseman
May 12 '17 at 20:50
add a commen...
“rm -rf” equivalent for Windows?
...lso returns a non-zero value when the directory doesn't exist, so rd /s /q foo && echo "yay" will fail if directory "foo" doesn't exist.
– Dirk Groeneveld
Mar 31 '13 at 19:47
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