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Java 256-bit AES Password-Based Encryption
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@Nick: Read PKCS #5. Salts are necessary for PBKDF2, which is why the API for password-based encryption requires them as input for key derivation. Without salts, a dictionary attack could be used, enabling a pre-computed list of the...
Reading a List from properties file and load with spring annotation @Value
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If you are reading this and you are using Spring Boot, you have 1 more option for this feature
Usually comma separated list are very clumsy for real world use case
(And sometime not even feasible, if you want to use commas in your con...
MySQL: Transactions vs Locking Tables
... system would put an unconditional lock on the record so that no one could read the "stale" balance either.
– Marc B
Dec 13 '10 at 18:24
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getResourceAsStream() vs FileInputStream
...tiple classloaders) it's recommend to use the ClassLoader as returned by Thread.currentThread().getContextClassLoader() for this so you can look "outside" the webapp context as well.
Another alternative in webapps is the ServletContext#getResource() and its counterpart ServletContext#getResourceAsSt...
Read XML file into XmlDocument
I am very new to C#. I have XML file (text.xml). I want to read that in XmlDocument and store the stream in string variable.
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How to get the Android device's primary e-mail address
... ADDRESS = 0;
int IS_PRIMARY = 1;
}
}
This requires both the READ_PROFILE and READ_CONTACTS permissions:
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
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Accessing Session Using ASP.NET Web API
...t.com/en-us/aspnet/core/fundamentals/app-state
Performance Concerns
Read Simon Weaver's answer below regarding performance. If you're accessing session data inside a WebApi project it can have very serious performance consequence - I have seen ASP.NET enforce a 200ms delay for concurrent requ...
What's the difference between window.location and document.location in JavaScript?
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window.location is read/write on all compliant browsers.
document.location is read-only in Internet Explorer (at least), but read/write in Gecko-based browsers (Firefox, SeaMonkey).
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How do I read text from the (windows) clipboard from python?
How do I read text from the (windows) clipboard from python?
11 Answers
11
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Split column at delimiter in data frame [duplicate]
... y C D
Essentially, it's a fancy convenience wrapper for using read.table(text = some_character_vector, sep = some_sep) and binding that output to the original data.frame. In other words, another A base R approach could be:
df <- data.frame(ID=11:13, FOO=c('a|b','b|c','x|y'))
cbind(d...