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NodeJS: Saving a base64-encoded image to disk
My Express app is receiving a base64-encoded PNG from the browser (generated from canvas with toDataURL() ) and writing it to a file. But the file isn't a valid image file, and the "file" utility simply identifies it as "data".
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Format a datetime into a string with milliseconds
I want to have a datetime string from the date with milliseconds. This code is typical for me and I'm eager to learn how to shorten it.
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How to clone an InputStream?
...d the input data is small enough to fit into memory, you can copy the data from your InputStream to a ByteArrayOutputStream.
Then you can obtain the associated array of bytes and open as many "cloned" ByteArrayInputStreams as you like.
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// ...
Ruby on Rails - Import Data from a CSV file
I would like to import data from a CSV file into an existing database table. I do not want to save the CSV file, just take the data from it and put it into the existing table. I am using Ruby 1.9.2 and Rails 3.
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Convert to/from DateTime and Time in Ruby
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You'll need two slightly different conversions.
To convert from Time to DateTime you can amend the Time class as follows:
require 'date'
class Time
def to_datetime
# Convert seconds + microseconds into a fractional number of seconds
seconds = sec + Rational(usec, 10**6)...
Mipmap drawables for icons
...cess the drawable resources for the desired density.
The actual mipmap API from 4.3. I haven't used this and am not familiar with it. It's not used by the Android Open Source Project launchers and I'm not aware of any other launcher using.
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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...
How do I detect if I am in release or debug mode?
...bug build
}
There have been reports that this value is not 100% reliable from Eclipse-based builds, though I personally have not encountered a problem, so I cannot say how much of an issue it really is.
If you are using Android Studio, or if you are using Gradle from the command line, you can add...
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 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...