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How to use UIVisualEffectView to Blur Image?
...the blur to an image? I've been trying to figure out the code for a while now :( still new at obj c!
7 Answers
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What underlies this JavaScript idiom: var self = this?
...in event handlers (especially in closures).
Edit: Note that using self is now discouraged as window.self exists and has the potential to cause errors if you are not careful.
What you call the variable doesn't particularly matter. var that = this; is fine, but there's nothing magic about the name....
How to get the name of the calling method?
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Now it seems to be caller_locations[0].label on Ruby 2.2.0 else you always have send_action result
– brcebn
Feb 16 '16 at 15:25
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pip issue installing almost any library
...ll to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neither is getting the job done.
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Determine if Android app is being used for the first time
...SET_APP_RUN_FIRST_TIME, "FIRST");
return App_runFirst;
}
}
Now Open Your Activity & Initialize .
private SharedPreference sharedPreferenceObj; // Declare Global
Now Call this in OnCreate section
sharedPreferenceObj=new SharedPreference(YourActivity.this)...
Regex for password must contain at least eight characters, at least one number and both lower and up
...avor, \W matches only ASCII characters. So you haven't changed that, and now you have to filter out whitespace characters. Furthermore, all the parentheses and {1,} quantifiers you added are pure noise, and removing the non-greedy (?) operators was pointless. There is no improvement here.
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Does SQLAlchemy have an equivalent of Django's get_or_create?
... new record, it will raise IntegrityError. The whole thing gets messed up, now we don't know what actually happened and we get another error, that no record is found.
– rajat
Oct 8 '15 at 19:31
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Is explicitly closing files important?
...ot good practice to leave your files open. In fact, in cpython 3 you will now get warnings that the system had to close files for you if you didn't do it.
Moral: Clean up after yourself. :)
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How can I return two values from a function in Python?
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>> ret_val = test()
>> print ret_val
(r1, r2, r3, ....)
now you can do everything you like with your tuple.
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Do sealed classes really offer performance Benefits?
...are complex rules regarding calling type, virtual/nonvirtual, and I don't know them all so I can't really outline them for you, but if you google for sealed classes and virtual methods you might find some articles on the topic.
Note that any kind of performance benefit you would obtain from this le...