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Calling startActivity() from outside of an Activity?
...roid version is below Android - 6 then you need to add this line otherwise it will work above Android - 6.
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Intent i = new Intent(this, Wakeup.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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Group by multiple columns in dplyr, using string vector input
... (documentation here). This lets you use the same functions you would use with select, like so:
data = data.frame(
asihckhdoydkhxiydfgfTgdsx = sample(LETTERS[1:3], 100, replace=TRUE),
a30mvxigxkghc5cdsvxvyv0ja = sample(LETTERS[1:3], 100, replace=TRUE),
value = rnorm(100)
)
# get the co...
Error handling with node.js streams
What's the correct way to handle errors with streams? I already know there's an 'error' event you can listen on, but I want to know some more details about arbitrarily complicated situations.
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How to access parent scope from within a custom directive *with own scope* in AngularJS?
I'm looking for any manner of accessing the "parent" scope within a directive. Any combination of scope, transclude, require, passing in variables (or the scope itself) from above, etc. I'm totally willing to bend over backwards, but I want to avoid something totally hacky or unmaintainable. For ...
How to supply value to an annotation from a Constant java
I am thinking this may not be possible in Java because annotation and its parameters are resolved at compile time. I have an interface as follows,
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What's the difference setting Embed Interop Types true and false in Visual Studio?
...t, the properties window has an option Embed Inteop Types , should we set it to True or False ? What's the difference?
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How do I delete specific lines in Notepad++?
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You can use menu Search -> Replace... (Ctrl + H).
It has a regular expression feature for replacing. You can use a regex that matches #region as well as whatever else is on the line, and replace it with empty space.
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What is the size of ActionBar in pixels?
...);
If you need to understand where this is defined:
The attribute name itself is defined in the platform's /res/values/attrs.xml
The platform's themes.xml picks this attribute and assigns a value to it.
The value assigned in step 2 depends on different device sizes, which are defined in various ...
Read connection string from web.config
... connection string from a web.config file into a public class contained within a class library?
12 Answers
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In php, is 0 treated as empty?
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FALSE
array() (an empty array)
var $var; (a variable declared, but without a value in a class)
Note that this is exactly the same list as for a coercion to Boolean false. empty is simply !isset($var) || !$var. Try isset instead.
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