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How to check if a user likes my Facebook Page or URL using Facebook's API
...app. If you parse that signed_request you can get some info about the user including if they've liked the page or not.
function parsePageSignedRequest() {
if (isset($_REQUEST['signed_request'])) {
$encoded_sig = null;
$payload = null;
list($encoded_sig, $payload) = explode('.'...
Automating “enter” keypresses for bash script generating ssh keys
...
Sure thing - updated the answer to include how to send newlines to a script.
– Rudu
Sep 7 '10 at 14:47
2
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C++ SFINAE examples?
...mory consumption) than previous approaches.
Here is a live example, which includes portability tweaks for GCC pre 5.1.
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d3 axis labeling
...ook at d3fc? it is an open source set of more high-level D3 components. It includes a cartesian chart component that might be what you need:
var chart = fc.chartSvgCartesian(
d3.scaleLinear(),
d3.scaleLinear()
)
.xLabel('Value')
.yLabel('Sine / Cosine')
.chartLabel('Sine and Cosine'...
Jackson JSON custom serialization for certain fields
..., true);
this.delegate.getObjectMapper().setSerializationInclusion(Include.NON_NULL);
}
// a real message converter that will respond to methods and do the actual work
private MappingJackson2HttpMessageConverter delegate = new MappingJackson2HttpMessageConverter();
@Overri...
Array slices in C#
...quence methods like Take() to get what you want out of it (don't forget to include the Linq namespace with using System.Linq;):
byte[] foo = new byte[4096];
var bar = foo.Take(41);
If you really need an array from any IEnumerable<byte> value, you could use the ToArray() method for that. T...
ERROR: Error 1005: Can't create table (errno: 121)
... myself; quoting from the latter:
If the table you're trying to create includes a foreign key constraint, and you've provided your own name for that constraint, remember that it must be unique within the database.
I wasn’t aware of that. I have changed my foreign key constraint names accordi...
Get number of digits with JavaScript
...ath.LOG10E + 1 | 0; // for positive integers
For all types of integers (including negatives) there is a brilliant optimised solution from @Mwr247, but be careful with using Math.log10, as it is not supported by many legacy browsers. So replacing Math.log10(x) with Math.log(x) * Math.LOG10E will s...
How do you stretch an image to fill a while keeping the image's aspect-ratio?
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It might be worth including the image url in the HTML, in order to separate style and contents, i.e. <div style="background-image: url('path/to/image.jpg');" class="fill"></div>
– binaryfunt
O...
Using the RUN instruction in a Dockerfile with 'source' does not work
...native shells: cmd and
powershell, as well as alternate shells available including sh.
The SHELL instruction can appear multiple times. Each SHELL
instruction overrides all previous SHELL instructions, and affects all
subsequent instructions. For example:
FROM microsoft/windowsservercore...