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StringUtils.isBlank() vs String.isEmpty()
...ngUtils.isEmpty(" bob ") = false
Warning: In java.lang.String.isBlank() and java.lang.String.isEmpty() work the same except they don't return true for null.
java.lang.String.isBlank() (since Java 11)
java.lang.String.isEmpty()
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How to construct a std::string from a std::vector?
...only after assert(not v.empty());, since if the vector is empty, both v[0] and v.front() would invoke undefined behavior. That, aside from the syntactic simplicity of not having to use the address-of operator, is the real benefit of C++11's data() function, which works even on an empty vector.
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Cannot hide status bar in iOS7
...plist file add a row call it "View controller-based status bar appearance" and set it to NO
Note that this simply does not work, if you are using UIImagePickerController in the app.
from http://www.openfl.org/developer/forums/general-discussion/iphone-5ios-7-cant-hide-status-bar/, mgiroux's soluti...
How can I make the cursor turn to the wait cursor?
I have a C# application that has users login to it, and because the hashing algorithm is expensive, it takes a little while to do. How can I display the Wait/Busy Cursor (usually the hourglass) to the user to let them know the program is doing something?
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What does the WPF star do (Width=“100*”)
...Height="*" means proportional sizing.
For example: to give 30% to column 1 and 70% to column 2 -
<ColumnDefinition Width="3*" />
<ColumnDefinition Width="7*" />
And likewise for rows -
<RowDefinition Height="3*" />
<RowDefinition Height="7*" />
The numbers do not have...
Execute Python script via crontab
...
Just use crontab -e and follow the tutorial here.
Look at point 3 for a guide on how to specify the frequency.
Based on your requirement, it should effectively be:
*/10 * * * * /usr/bin/python script.py
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What's the difference between String(value) vs value.toString()
Javascript has lot's of "tricks" around types and type conversions so I'm wondering if these 2 methods are the same or if there is some corner case that makes them different?
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Sharing Test code in Maven
...so: classifier). It tells Maven a bit more explicitly what you are doing (and I've found that m2eclipse and q4e both like it better).
<dependency>
<groupId>com.myco.app</groupId>
<artifactId>foo</artifactId>
<version>1.0-SNAPSHOT</version>
<type...
How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...e with existing data. Is there a way to add a primary key without deleting and re-creating the table?
4 Answers
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Redirecting to a relative URL in JavaScript
...ound using window.location.href = '../' redirected to the root of the site and not "one level up" as expected. When the current page is "www.example.com/customers/list" I needed to use './'. I guess this is because "list" is not considered as a directory level.
– Marcus Cunning...