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Best way to convert strings to symbols in hash
...andard Library classes.
require 'facets'
> {'some' => 'thing', 'foo' => 'bar'}.symbolize_keys
=> {:some=>"thing", :foo=>"bar}
see also:
http://rubyworks.github.io/rubyfaux/?doc=http://rubyworks.github.io/facets/docs/facets-2.9.3/core.json#api-class-Hash
...
Protected methods in Objective-C
...rClassProtectedMethods <NSObject>
- (void) protectMethod:(NSObject *)foo;
@end
@interface SuperClass (ProtectedMethods) < SuperClassProtectedMethods >
@end
SuperClass.m: (compiler will now force you to add protected methods)
#import "SuperClassProtectedMethods.h"
@implementation Supe...
Does reading an entire file leave the file handle open?
...
@jgmjgm it's more reliable because with foo() as f: [...] is basically the same as f = foo(), f.__enter__(), [...] and f.__exit__() with exceptions handled, so that __exit__ is always called. So the file always gets closed.
– neingeist
...
Error: free(): invalid next size (fast):
...this it was freeing up all other memory.
A simple:
int* a;
class foo{
foo(){
for(i=0;i<n;i++)
a=new int[i];
}
Solved the problem. But it did take a lot of time trying to debug this because the compiler could not "really" find the error.
...
Angular JS break ForEach
...sion.
JSFiddle:
http://jsfiddle.net/JEcD2/1/
Javascript:
var array = ['foo', 'bar', 'yay'];
$.each(array, function(index, element){
if (element === 'foo') {
return true; // continue
}
console.log(this);
if (element === 'bar') {
return false; // break
}
});
N...
Is there any way to git checkout previous branch?
...e equivalent of cd - for git. If I am in branch master and I checkout foo , I would love to be able to type something like git checkout - to go back to master , and be able to type it again to return to foo .
...
Logical Operators, || or OR?
...
and $e = true || $x = 'foo' will not define $x because of short-circuiting, not because of higher precedence.
– Matt Kieran
Jul 31 '14 at 1:18
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Parsing query strings on Android
...ort org.eclipse.jetty.util.*;
URL url = new URL("www.example.com/index.php?foo=bar&bla=blub");
MultiMap<String> params = new MultiMap<String>();
UrlEncoded.decodeTo(url.getQuery(), params, "UTF-8");
assert params.getString("foo").equals("bar");
assert params.getString("bla").equals(...
Install a module using pip for specific python version
...hon version you want to install the package for:
python2.7 -m pip install foo
share
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Add a default value to a column through a migration
...ng defaults for existing records. For example: def change ` add_column :foos, :name, default: "something for existing values"` ` change_column_default :foos, :name, default: ""` end
– user1491929
Jan 4 '16 at 16:14
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