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jQuery get textarea text
Recently I have started playing with jQuery, and have been following a couple of tutorials. Now I feel slightly competent with using it (it's pretty easy), and I thought it would be cool if I were able to make a 'console' on my webpage (as in, you press the ` key like you do in FPS games, etc.), a...
Where does R store packages?
...all.packages() function in R is the automatic unzipping utility that gets and install packages in R.
4 Answers
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Best practice to mark deprecated code in Ruby?
...a method as deprecated, so the people using it can easily check their code and catch up. In Java you set @Deprecated and everybody knows what this means.
...
How can I measure the speed of code written in PHP? [closed]
... two solutions :
The quite "naïve" one is using microtime(true) tobefore and after a portion of code, to get how much time has passed during its execution ; other answers said that and gave examples already, so I won"t say much more.
This is a nice solution if you want to benchmark a couple of in...
How to append rows to an R data frame
...rs of the type you want for each column, insert values into those vectors, and then, at the end, create your data.frame.
Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, defined as:
# pre-allocate space
f3 <- function(n){
df <- data.frame(x = numeric(n)...
SQLiteDatabase.query method
...By using the Where/Bind -Args version you get automatically escaped values and you don't have to worry if input-data contains '.
Unsafe: String whereClause = "column1='" + value + "'";
Safe: String whereClause = "column1=?";
because if value contains a ' your statement either breaks and you get ex...
How does push notification technology work on Android?
...
From what I've heard during an Android developers conference in Israel:
There is simply a TCP socket waiting in accept mode on a cloud Google server. The TCP connection had been initiated by the Google Play application. That's why Google Play must be inst...
Running a cron every 30 seconds
...e offset by 30 seconds:
# Need these to run on 30-sec boundaries, keep commands in sync.
* * * * * /path/to/executable param1 param2
* * * * * ( sleep 30 ; /path/to/executable param1 param2 )
You'll see I've added comments and formatted to ensure it's easy to keep them synchronised.
Bo...
Is a `=default` move constructor equivalent to a member-wise move constructor?
... same declared function type (except for possibly differing ref-qualifiers and except that in the case of a copy constructor or copy assignment operator, the parameter type may be “reference to non-const T”, where T is the name of the member function’s class) as if it had been implicitly decla...
How do I include a file over 2 directories back?
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@Brian Well, that’s nonsense, you’re comparing apples and oranges. You’re right that a define would be used here but (1) that wasn’t even remotely the question here. And (2) you’d still use a relative path in your define, Unless you actually hard-code the whole absolute se...