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How to encrypt/decrypt data in php?
...e encryption key and initialisation vector; for this post we will be using AES-256-CBC which has a fixed block size of 16 bytes and a key size of either 16, 24 or 32 bytes.
Encryption key
A good encryption key is a binary blob that's generated from a reliable random number generator. The following...
How to read a local text file?
...
// outputs a javascript object from the parsed json
Update 30/07/2018 (disclaimer):
This technique works fine in Firefox, but it seems like Chrome's fetch implementation does not support file:/// URL scheme at the date of writing this update (tested in Chrome 68).
Update-2 (disclaime...
What is the non-jQuery equivalent of '$(document).ready()'?
...
Now that it's 2018 here's a quick and simple method.
This will add an event listener, but if it already fired we'll check that the dom is in a ready state or that it's complete. This can fire before or after sub-resources have finished lo...
How can we make xkcd style graphs?
... at 20:49
Emilio Torres ManzaneraEmilio Torres Manzanera
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...
How to generate an openSSL key using a passphrase from the command line?
...n invocation like (in this case, the password is foobar):
openssl genrsa -aes128 -passout pass:foobar 3072
However, note that this passphrase could be grabbed by any other process running on the machine at the time, since command-line arguments are generally visible to all processes.
A better al...
Defining static const integer members in class definition
... are correct, and only need a definition if you take the address.
class AE {
// ...
public:
static const int c6 = 7;
static const int c7 = 31;
};
const int AE::c7; // definition
int f()
{
const int* p1 = &AE::c6; // error: c6 not an lvalue
const int* p2 = &AE::c...
Side-by-side plots with ggplot2
... x = myX,
facets = ~myGroup)
ggplot(data = mydata) +
geom_bar(aes(myX)) +
facet_wrap(~myGroup)
Update
the plot_grid function in the cowplot is worth checking out as an alternative to grid.arrange. See the answer by @claus-wilke below and this vignette for an equivalent approac...
How do I remove diacritics (accents) from a string in .NET?
...
I've not used this method, but Michael Kaplan describes a method for doing so in his blog post (with a confusing title) that talks about stripping diacritics: Stripping is an interesting job (aka
On the meaning of meaningless, aka All
Mn characters are non-spa...
Changing font size and direction of axes text in ggplot2
..., labels=paste("long text label ", letters[1:10])), y=rnorm(10))
ggplot(d, aes(x=x, y=y)) + geom_point() +
theme(text = element_text(size=20),
axis.text.x = element_text(angle=90, hjust=1))
#vjust adjust the vertical justification of the labels, which is often useful
There's lots of...
Order Bars in ggplot2 bar graph
... decreasing=TRUE))))
## plot
ggplot(theTable,aes(x=Position))+geom_bar(binwidth=1)
In the most general sense, we simply need to set the factor levels to be in the desired order. If left unspecified, the levels of a factor will be sorted alphabetically. You can also ...