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Creating default object from empty value in PHP?
...$res = NULL;
$res->success = false; // Warning: Creating default object from empty value
PHP will report a different error message if $res is already initialized to some value but is not an object:
$res = 33;
$res->success = false; // Warning: Attempt to assign property of non-object
In o...
What's the difference between tilde(~) and caret(^) in package.json?
...versions, without incrementing the minor version. ~1.2.3 will use releases from 1.2.3 to <1.3.0.
^version “Compatible with version”, will update you to all future minor/patch versions, without incrementing the major version. ^2.3.4 will use releases from 2.3.4 to <3.0.0.
See Comments be...
Remove an element from a Bash array
I need to remove an element from an array in bash shell.
Generally I'd simply do:
20 Answers
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How do you use version control with Access development?
...t file> <path>
' Converts all modules, classes, forms and macros from an Access Project file (.adp) <input file> to
' text and saves the results in separate files to <path>. Requires Microsoft Access.
'
Option Explicit
const acForm = 2
const acModule = 5
const acMacro = 4
co...
How to use 'cp' command to exclude a specific directory?
...pied before performing real operation, and if everything is ok, remove -n from command line.
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What's the simplest way to subtract a month from a date in Python?
... 0, 0)
Edit Corrected to handle the day as well.
Edit See also the answer from puzzlement which points out a simpler calculation for d:
d = min(date.day, calendar.monthrange(y, m)[1])
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How does the paste image from clipboard functionality work in Gmail and Google Chrome 12+?
I noticed a blog post from Google that mentions the ability to paste images directly from the clipboard into a Gmail message if you're using the latest version of Chrome. I tried this with my version of Chrome (12.0.742.91 beta-m) and it works great using control keys or the context menu.
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How to call shell commands from Ruby
How do I call shell commands from inside of a Ruby program? How do I then get output from these commands back into Ruby?
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Using cURL with a username and password?
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Note that if you do this from the console the password will remain in the history which is ... wrong. You should specify just -u user and CURL will ask you for the password in no-echo mode.
– Cristian Vrabie
Apr...
How to set up Spark on Windows?
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I found the easiest solution on Windows is to build from source.
You can pretty much follow this guide: http://spark.apache.org/docs/latest/building-spark.html
Download and install Maven, and set MAVEN_OPTS to the value specified in the guide.
But if you're just playing aro...