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How to find path of active app.config file?
...ing about this, hacky as it looks, is that it compiles under .NET Standard 2.0. It returns null under .NET Core 2.0, but it's useful during the migration.
– EM0
Jan 18 '18 at 12:27
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SQL order string as number
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Another way, without using a single cast.
(For people who use JPA 2.0, where no casting is allowed)
select col from yourtable
order by length(col),col
EDIT: only works for positive integers
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Delete a key from a MongoDB document using Mongoose
...collection.update({_id: user._id}, {$unset: {field: 1 }});
Since version 2.0 you can do:
User.update({_id: user._id}, {$unset: {field: 1 }}, callback);
And since version 2.4, if you have an instance of a model already you can do:
doc.field = undefined;
doc.save(callback);
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Mockito How to mock and assert a thrown exception?
...j full sample
Dependencies
eu.codearte.catch-exception:catch-exception:2.0
org.assertj:assertj-core:3.12.2
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Can't find Request.GetOwinContext
...t().GetUserManager<ApplicationUserManager>();
it works in Identity 2.0
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Getting Java version at runtime
...1.6.0_23, 1.7.0, 1.7.0_80, 1.8.0_211
Java 9 or higher: 9.0.1, 11.0.4, 12, 12.0.1
Here is a trick to extract the major version: If it is a 1.x.y_z version string, extract the character at index 2 of the string. If it is a x.y.z version string, cut the string to its first dot character, if one exist...
How to run a PowerShell script
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If you are on PowerShell 2.0, use PowerShell.exe's -File parameter to invoke a script from another environment, like cmd.exe. For example:
Powershell.exe -File C:\my_path\yada_yada\run_import_script.ps1
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What is the reason for having '//' in Python? [duplicate]
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// is unconditionally "flooring division", e.g:
>>> 4.0//1.5
2.0
As you see, even though both operands are floats, // still floors -- so you always know securely what it's gonna do.
Single / may or may not floor depending on Python release, future imports, and even flags on which Py...
Android Studio rendering problems
...mine was showing <null>. But I resolved that I updated the gradle to 2.0 and changed the gradle home rebuild the project and restart the studio and now its showing 19...so All set here
– Nipun David
Aug 16 '14 at 12:20
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Extracting the last n characters from a ruby string
...(5).to_s
For ruby 1.9+
"123".split(//).last(5).join("").to_s
For ruby 2.0+, join returns a string
"123".split(//).last(5).join
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