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Binding arrow keys in JS/jQuery
...
document.onkeydown = function(e) {
switch(e.which) {
case 37: // left
break;
case 38: // up
break;
case 39: // right
break;
case 40: // down
break;
default: return; // exit this handler for other keys
}
e.pr...
Linux command to print directory structure in the form of a tree
...ree -d /proc/self/
/proc/self/
|-- attr
|-- cwd -> /proc
|-- fd
| `-- 3 -> /proc/15589/fd
|-- fdinfo
|-- net
| |-- dev_snmp6
| |-- netfilter
| |-- rpc
| | |-- auth.rpcsec.context
| | |-- auth.rpcsec.init
| | |-- auth.unix.gid
| | |-- auth.unix.ip
| | |-- nfs4.idtona...
Why would finding a type's initializer throw a NullReferenceException?
...llingConventions, System.Type[], System.Reflection.ParameterModifier[])+0xa3:
000007fe`e5735403 488b4608 mov rax,qword ptr [rsi+8] ds:00000000`00000008=????????????????
Trying to load from [rsi+8] when @rsi is NULL. Lets inspect the function:
0:000> ln 000007fe`e5735403
(000007fe`e5...
How to get a specific output iterating a hash in Ruby?
...
328
hash.each do |key, array|
puts "#{key}-----"
puts array
end
Regarding order I should add...
Can an enum class be converted to the underlying type?
...
|
edited Jan 23 at 11:09
Trilarion
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a...
The difference between try/catch/throw and try/catch(e)/throw e
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Bruno ReisBruno Reis
33.5k1111 gold badges106106 silver badges145145 bronze badges
...
What is a difference between
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Yishai
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answered Sep 2 '09 at 14:54
Jon SkeetJon...
Error handling in Bash
...
error() {
local parent_lineno="$1"
local message="$2"
local code="${3:-1}"
if [[ -n "$message" ]] ; then
echo "Error on or near line ${parent_lineno}: ${message}; exiting with status ${code}"
else
echo "Error on or near line ${parent_lineno}; exiting with status ${code}"
fi
ex...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...ies(df.Letter.values,index=df.Position).to_dict()
Out[9]: {1: 'a', 2: 'b', 3: 'c', 4: 'd', 5: 'e'}
Speed comparion (using Wouter's method)
In [6]: df = pd.DataFrame(randint(0,10,10000).reshape(5000,2),columns=list('AB'))
In [7]: %timeit dict(zip(df.A,df.B))
1000 loops, best of 3: 1.27 ms per loo...