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bool _abb_in_order(abb_nodo_t *nodo, bool visitar(const char *, void *, void *), void *extra){
	if (!nodo)
		return true;
	return _abb_in_order(nodo->der, visitar, extra)
		&& visitar(nodo->clave, nodo->dato, extra)
		&& _abb_in_order(nodo->izq, visitar, extra);
}

void abb_in_order(abb_t *arbol, bool visitar(const char *, void *, void *), void *extra){
	_abb_in_order(arbol->raiz, visitar, extra);

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Synchronous counter design

When designing a synchronous counter, you first draw the counter's state diagram.

With that in mind, you can write the transitions table, where:

• the independent variables are the current flip-flops' outputs Q[0], Q[1], ... Q[n]
• you provide the desired next state of the flip-flops' outputs Q[0], Q[1], ... Q[n]
• the dependent variables are the flip-flops' entries FF[0], FF[1], ... FF[n], which depend on the current state, the desired state, and your flip-flop type
• there may be extra independent variables like a reset entry, or an up/down entry for an up/down counter

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train <- read.csv("train.csv")

ss <- subset(train, select=c("Descript"))
which.max(table(ss))
# GRAND THEFT FROM LOCKED AUTO

ss <- subset(train, Category=="DRIVING UNDER THE INFLUENCE", select=c("DayOfWeek"))
which.max(table(ss))
# Saturday

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class AdaptiveArithmeticCoder:
    FREQ_INIT = 1
    def __init__(self, character_space):
        self.character_space = character_space
        self.count = len(character_space)
        self.freqs = [ AdaptiveArithmeticCoder.FREQ_INIT ] * self.count
        self.intervals = [ None ] * self.count
        self.update_intervals((0, 1))

    def update_intervals(self, interval):

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class LZW:
    def __init__(self):
        self.ctx = ""
        self.table = [ chr(i) for i in range(256) ]
        self.empty_index = 256
        self.last_index = None
        self._model = []

    def encode(self, c):
        """Receives a character to encode. Updates the table."""

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tinchou@martin-w81 MINGW64 ~
$ docker-machine -D env --shell cmd default
executing: C:\Program Files\Oracle\VirtualBox\VBoxManage.exe showvminfo default --machinereadable
STDOUT: name="default"
groups="/"
ostype="Linux 2.6 / 3.x / 4.x (64-bit)"
UUID="212c7825-85fe-4faf-a454-9af114c61af1"
CfgFile="<user path>\\.docker\\machine\\machines\\default\\default\\default.vbox"
SnapFldr="<user path>\\.docker\\machine\\machines\\default\\default\\Snapshots"
LogFldr="<user path>\\.docker\\machine\\machines\\default\\default\\Logs"