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Conventions for exceptions or error codes
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Your fourth point is not a fair one: An error status when converted into an object, can also contain code to check whether the file exists, or is locked, etc. It's simply a variation of stackoverflow.com/a/3157182/632951
– Pacerier
Jul 25 '14 a...
Beautiful Soup and extracting a div and its contents by ID
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Beautiful Soup 4 supports most CSS selectors with the .select() method, therefore you can use an id selector such as:
soup.select('#articlebody')
If you need to specify the element's type, you can add a type selector before the id selector:
soup.select('di...
How do I set up NSZombieEnabled in Xcode 4?
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⌥⌘R
(or click Menubar > Product > Scheme > Edit Scheme)
select the "Diagnostics" tab and click "Enable Zombie Objects":
This turns released objects into NSZombie instances that print console warnings when used again. This is a debugging aid that increases memory use (no objec...
How to create relationships in MySQL
...s defined as the default storage engine,can check using command (mysql> SELECT @@default_storage_engine;)
– Arun
Feb 18 at 4:00
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What's the best way to parse command line arguments? [closed]
...2
3
True
Incorrect arguments:
$ ./app foo 2 --opt_arg 3 --switch
usage: convert [-h] [--opt_arg OPT_ARG] [--switch] pos_arg [opt_pos_arg]
app: error: argument pos_arg: invalid int value: 'foo'
$ ./app 11 2 --opt_arg 3
Argument values:
11
2
3
False
usage: app [-h] [--opt_arg OPT_ARG] [--switch] p...
How to import existing Android project into Eclipse?
... import and existing Android project into my current Eclipse workspace. I select File->New->Android Project, which brings up the Android project dialog, I then select, "Create project from existing source", Location, Build Target and Finish.
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Are there any SHA-256 javascript implementations that are generally considered trustworthy?
...nst hashBuffer = await crypto.subtle.digest('SHA-256', msgBuffer);
// convert ArrayBuffer to Array
const hashArray = Array.from(new Uint8Array(hashBuffer));
// convert bytes to hex string
const hashHex = hashArray.map(b => ('00' + b.toString(16)).slice(-2)).joi...
Importing Maven project into Eclipse
...e
Open Eclipse
Click File > Import
Type Maven in the search box under Select an import source:
Select Existing Maven Projects
Click Next
Click Browse and select the folder that is the root of the Maven project (probably contains the pom.xml file)
Click Next
Click Finish
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How to change the default collation of a table?
...set and collation of a table including those of existing columns (note the convert to clause):
alter table <some_table> convert to character set utf8mb4 collate utf8mb4_unicode_ci;
Edited the answer, thanks to the prompting of some comments:
Should avoid recommending utf8. It's almost n...
PHP Timestamp into DateTime
Do you know how I can convert this to a strtotime, or a similar type of value to pass into the DateTime object?
4 Answer...