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What's “tools:context” in Android layout files?
...esponds to the activity, if the activity in the manifest file set a Theme, then ADT Layout Editor will render your current Layout according to the Theme.Means that if you set the MainActivity set a Theme. The Light (the other), then you see in visual layout manager o background control of what shoul...
#ifdef replacement in the Swift language
...ause it uses the music library, which doesn't exist on the Simulator. How, then, to take screen shots on the Simulator for devices I don't own? Without those screen shots, I can't submit to the AppStore.
I need fake data and a different way of processing it. I have two environment variables: one wh...
Why is “if not someobj:” better than “if someobj == None:” in Python?
... float), it calls this method. It must either return a bool value which is then directly used, or an int value that is considered False if equal to zero.
Otherwise, if the object has a __len__ special method (as do container built-ins, list, dict, set, tuple, ...), it calls this method, considering ...
Removing a model in rails (reverse of “rails g model Title…”)
...igration that drops the tables for you. You should create a migration and then in the file note tables you want dropped like this:
class DropTables < ActiveRecord::Migration
def up
drop_table :table_you_dont_want
end
def down
raise ActiveRecord::IrreversibleMigration
end
end
...
What's the best way to check if a file exists in C?
...ID and effective GID. This only matters to setuid or setgid programs, but then it matters intensely as it may give the 'wrong' answer.
– Jonathan Leffler
Oct 24 '08 at 7:26
3
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When should you branch?
...cause you would break API, or introduce code that would break everything), then you need a another branch.
(To isolate that new code for the legacy one, even though the two code sets will be merge later on)
So that is your answer right there:
You should branch whenever you cannot pursue and record ...
Defining a percentage width for a LinearLayout? [duplicate]
...Layouts as children to your LinearLayout and set weights 0.15, 0.70, 0.15. Then add your buttons to the second RelativeLayout(the one with weight 0.70).
Like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height...
How to locate the git config file in Mac [duplicate]
.../gitconfig in my case. I had no Idea to look there. (opens the file in vim then 1 followed by control + g shows the path of the file)
– Touten
Aug 3 at 2:54
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Regular Expression to match only alphabetic characters
...and doesn't match Unicode characters. If you want to match Unicode letters then use:
/^\p{L}+$/u
Here, \p{L} matches any kind of letter from any language
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C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...shows you how objects are laid out. Or you could allocate two objects and then use unverifiable operations to subtract the addresses. 99.9% of the time, the two objects will be adjacent. You can also use a managed profiler to get a sense of how much memory is consumed by instances of a particular ...