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How to tell if UIViewController's view is visible
I have a tab bar application, with many views. Is there a way to know if a particular UIViewController is currently visible from within the UIViewController ? (looking for a property)
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Split data frame string column into multiple columns
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Use stringr::str_split_fixed
library(stringr)
str_split_fixed(before$type, "_and_", 2)
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How to read a file without newlines?
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You can read the whole file and split lines using str.splitlines:
temp = file.read().splitlines()
Or you can strip the newline by hand:
temp = [line[:-1] for line in file]
Note: this last solution only works if the file ends with a newline, otherwise the...
Make column not nullable in a Laravel migration
I'm writing a migration to make certain columns in a table nullable right now. For the down function, I of course want to make those columns not nullable again. I looked through the schema builder docs , but couldn't see a way to do this.
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How do I return early from a rake task?
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edited Jun 19 '10 at 7:25
pupeno
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How do I use spaces in the Command Prompt?
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edited Jun 17 '11 at 11:06
answered Jun 16 '11 at 20:14
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How do I add a new sourceset to Gradle?
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This is a simple gradle build script that has an intTest source set in addition to the main and test source sets:
apply plugin: "java"
sourceSets {
// Note that just declaring this sourceset creates two configurations.
intTest {
java {
compileClasspath += main.output
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Why can't we autowire static fields in spring?
... there is another way to achieve this but just want to know why cant we do it in below way.
4 Answers
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ASP.NET MVC: What is the purpose of @section? [closed]
...tion is for defining a content are override from a shared view. Basically, it is a way for you to adjust your shared view (similar to a Master Page in Web Forms).
You might find Scott Gu's write up on this very interesting.
Edit: Based on additional question clarification
The @RenderSection synta...
Current time in microseconds in java
On a Unix system, is there a way to get a timestamp with microsecond level accuracy in Java? Something like C's gettimeofday function.
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