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Python argparse: Make at least one argument required
...tiple aspects of command line based program:
good design of command line
selecting/using proper parser
argparse offers a lot, but restricts possible scenarios and can become very complex.
With docopt things go much shorter while preserving readability and offering high degree of flexibility. If...
Git: show more context when using git add -i or git add -e?
I'm selectively committing parts of a large file and I'd like to see more context around each hunk. Is this possible?
2 Ans...
Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
...CU and Deployment Problems
The behavior of composer should be intelligent selecting the right icu-component:
symfony/icu 1.0.*: when the intl extension is not available
symfony/icu 1.1.*: when intl is compiled with ICU 4.0 or higher
symfony/icu 1.2.*: when intl is compiled with ICU 4.4 o...
Python/postgres/psycopg2: getting ID of row just inserted
... case you can use:
cursor.execute('INSERT INTO ........')
cursor.execute('SELECT LASTVAL()')
lastid = cursor.fetchone()['lastval']
Just in case it was useful for anyone!
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What's a simple way to get a text input popup dialog box on an iPhone
...wordPrompt = UIAlertController(title: "Enter Password", message: "You have selected to enter your passwod.", preferredStyle: UIAlertControllerStyle.Alert);
passwordPrompt.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: { (action) -> Void in
// Now do ...
Create table in SQLite only if it doesn't exist already
...bles with the name
tablename = 'KABOOM'
cursor.execute("SELECT count(name) FROM sqlite_master WHERE type='table' AND name=? ", (tablename, ))
print(cursor.fetchone()) # this SHOULD BE in a tuple containing count(name) integer.
# check if the db has existing table...
Git - How to use .netrc file on Windows to save user and password
...in the control panel. Depending on the version of Windows, you may need to select "Advanced Options".).
The password stored in the _netrc file cannot contain spaces (quoting the password will not work).
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CSS last-child(-1)
I am looking for a css selector that lets me select the pre-last child of list.
2 Answers
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How to Detect if I'm Compiling Code with a particular Visual Studio version?
... @thomthom : This macro exactly reflects the Toolset version used by the selected target of the build project. Or more distinct: Project->Properties->General->Platform Toolset.
– Yamakuzure
Nov 30 '17 at 11:57
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Accessing outside variable using anonymous function as params
... same no matter what function is executing.
Code:
$result = '';
fetch("SELECT title FROM tbl", function($r) use (&$result) {
$result .= $r['title'];
});
But beware (taken from one of comments in previous link):
use() parameters are early binding - they use the variable's value at
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