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Java: how to initialize String[]?
...
String[] errorSoon = { "foo", "bar" };
-- or --
String[] errorSoon = new String[2];
errorSoon[0] = "foo";
errorSoon[1] = "bar";
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What does template mean?
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// Factorial<4>::value == 24
// Factorial<0>::value == 1
void foo()
{
int x = Factorial<4>::value; // == 24
int y = Factorial<0>::value; // == 1
}
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improve t...
Speed up the loop operation in R
...row(x)
}
}
system.time({
d=data.frame(seq=1:10000,r=rnorm(10000))
d$foo=d$r
d$seq=1:5
mark=NA
for(i in 1:nrow(d)){
if(d$seq[i]==1) mark=d$r[i]
d$foo[i]=mark
}
})
system.time({
d=data.frame(seq=1:10000,r=rnorm(10000))
d$foo=d$r
d$seq=1:5
d=as.list(d) #become a list
m...
How to create dictionary and add key–value pairs dynamically?
... same:
// a simple constructor with a toString prototypal method
function Foo() {
this.myRandomNumber = Math.random() * 1000 | 0;
}
Foo.prototype.toString = function () {
return "Foo instance #" + this.myRandomNumber;
};
dict[new Foo] = "some value";
console.log(dict);
// => {
// "Fo...
How to set variables in HIVE scripts
...ution.
e.g.
hive> set CURRENT_DATE='2012-09-16';
hive> select * from foo where day >= ${hiveconf:CURRENT_DATE}
similarly, you could pass on command line:
% hive -hiveconf CURRENT_DATE='2012-09-16' -f test.hql
Note that there are env and system variables as well, so you can reference ${env...
Select elements by attribute in CSS
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[data-value] {
/* Attribute exists */
}
[data-value="foo"] {
/* Attribute has this exact value */
}
[data-value*="foo"] {
/* Attribute value contains this value somewhere in it */
}
[data-value~="foo"] {
/* Attribute has this value in a space-separated list somewhere */...
How can I include raw JSON in an object using Jackson?
...est
public void test() throws IOException {
Pojo pojo = new Pojo("{\"foo\":18}");
String output = mapper.writeValueAsString(pojo);
assertThat(output).isEqualTo("{\"json\":{\"foo\":18}}");
Pojo deserialized = mapper.readValue(output, Pojo.class);
assertThat(deserialized.json.t...
Why was the arguments.callee.caller property deprecated in JavaScript?
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It is better to use named functions than arguments.callee:
function foo () {
... foo() ...
}
is better than
function () {
... arguments.callee() ...
}
The named function will have access to its caller through the caller property:
function foo () {
alert(foo.caller);
...
What is the shortest function for reading a cookie by name in JavaScript?
...ow cookie names or values are encoded. Calling the function with a string "foo:bar[0]" should return a cookie (literally) named "foo:bar[0]";
New cookies may be written and/or existing cookies modified at any point during lifetime of the page.
Under these assumptions, it's clear that encodeURIComp...
Can “this” ever be null in Java?
...
the null pointer exception in something like foo.bar() would be thrown when foo is discovered to be null. it does happen before entering the method, but the real story is that there is no method to attempt to call.
– Claudiu
Sep 24...