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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...he problems with the JavaScript-style have been fixed in Ruby 2.2. You can now use quotes if you have symbols that aren't valid labels, for example:
h = { 'where is': 'pancakes house?', '$set': { a: 11 } }
But you still need the hashrocket if your keys are not symbols.
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Getting “type or namespace name could not be found” but everything seems ok?
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Thanks - this helped just now. I recently moved the solution to VS2012 from VS2010, and had created one new class library in VS2012. All of a sudden I was getting this error, and of course it was because the new class library targeted .NET 4.5 while t...
Why must we define both == and != in C#?
...ality operator, that all objects have, there is not an overload for it.1
Knowing that this is the case, the real question is: Why was this designed in this way and why doesn't the compiler figure it out on its own? A lot people are saying this wasn't a design decision, but I like to think it was t...
Can you use hash navigation without affecting history?
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Edit: It's been a couple years now, and browsers have evolved.
@Luxiyalu's answer is the way to go
--Old Answer--
I too think it is impossible (at this time). But why do you need to change the hash value if you are not going to use it?
I believe the ma...
Get pandas.read_csv to read empty values as empty string instead of nan
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Documentation for read_csv now offers both na_values (list or dict indexed by columns) and keep_default_na (bool). The keep_default_na value indicates whether pandas' default NA values should be replaced or appended to. The OP's code doesn't work curre...
Django: How to completely uninstall a Django app?
...py makemigrations -n drop_all_tables my_app_to_remove
The directory looks now like this:
my_app_to_remove/
my_app_to_remove/__init__.py
my_app_to_remove/migrations
my_app_to_remove/migrations/0001_initial.py
my_app_to_remove/migrations/....
my_app_to_remove/migrations/0030_drop_all_tables.py
my_ap...
difference and when to use getApplication(), getApplicationContext(), getBaseContext() and someClass
...ctivity.this and getBaseContext, they all offer reference to the context.
Now the thing confuses is the declaration of different contexts and their specific-usage. To make things simple, you should count two types of context available in the Android framework.
Application Context
Activity Context...
AngularJS changes URLs to “unsafe:” in extension page
...for white listing the image screen shots i am capturing with html2canvas , now there is no error that says unsafe:data; but the image is not getting captured. Any idea what regular expression i shall use ? I am capturing a image/png as base64 url. Now the html looks like : <img ng-src="data:," cl...
How to use SVN, Branch? Tag? Trunk?
... of your earlier answers suggested, for different development paths; right now for one of our programs we have 3 active branches: 1 for the main development, 1 for the as-yet-unfinished effort to parallelise the program, and 1 for the effort to revise it to use XML input and output files;
-- we sca...
Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
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So, basically, you want your code to run faster. JNI is the answer. I know you said it didn't work for you, but let me show you that you are wrong.
Here's Dot.java:
import java.nio.FloatBuffer;
import org.bytedeco.javacpp.*;
import org.bytedeco.javacpp.annotation.*;
@Platform(include = "Dot.h...