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Android: How can I validate EditText input?
... @TextRule, @NumberRule, @Required, @Regex, @Email, @IpAddress, @Password, etc.,
You can add these annotations to your UI widget references and perform validations. It also allows you to perform validations asynchronously which is ideal for situations such as checking for unique username from a rem...
How do I add comments to package.json for npm install?
...an array, or multiple "//" keys.
When using your usual tools (npm, yarn, etc) multiple "//" keys will be removed. This survives:
{ "//": [
"first line",
"second line" ] }
This will not survive:
{ "//": "this is the first line of a comment",
"//": "this is the second line of the comme...
How to check whether a string is Base64 encoded or not
...ror-prone than if non-base64 input typically contains spaces, punctuation, etc.
– tripleee
Nov 22 '12 at 21:43
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delete vs delete[] operators in C++
... elements allocated - it may use this for any purpose it wants (debugging, etc...).
For the new that creates a non-array object, it will look for an operator new in the element's class or in the global scope. It passes the amount of memory requested (exactly sizeof(T) always).
For the delete[], ...
Plotting two variables as lines using ggplot2 on the same graph
...eom_line()
I'll leave it to you to tidy up the axis labels, legend title etc.
HTH
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SQL Server database backup restore on lower version
...ead, script out the entire database (tables, procs, triggers, constraints, etc) without data, create the new database, then right click the source database, go to "Tools", then "Export Data" to transfer the contents of the tables to your database.
– Jim McLeod
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Best way to initialize (empty) array in PHP
...istribute your code, the [] syntax will fatal out.
– etc
Nov 21 '14 at 1:44
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How to get a random number in Ruby
... @banister: wow, I was convinced that the new api (rand with range, bytes, etc...) was available directly through the Random object. rand with range will be in 1.9.3, and I'll make a feature request for bytes. I've edited my answer
– Marc-André Lafortune
Jun 2...
How can I unstage my files again after making a local commit?
...de, as HEAD~1, HEAD~2, HEAD~3, for parent, grandparent, great-grandparent, etc. (technically it's finding the first parent in earlier generations).
When there's a merge, then commits have more than one parent. That's when the ^ caret comes into play--you can remember because it shows the branches ...
How do I manage conflicts with git submodules?
... standard submodule workflows (checkout master, pull down the desired tag, etc).
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