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Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp?
...ne massive text file, and then perform syntax analysis and finally it will convert it to some intermediate code, optimize/perform other tasks, and finally generate the assembly output for the target architecture. Because of this, if a file is #included multiple times under one .cpp file, the compil...
Parallel.ForEach vs Task.Run and Task.WhenAll
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The first version will synchronously block the calling thread (and run some of the tasks on it).
If it's a UI thread, this will freeze the UI.
The second version will run the tasks asynchronously in the thread pool and release the calling thread until they're done.
There are also diffe...
Ruby: extend self
...he code is easier to test, mock, and stub, and it’s still dead simple to convert into a proper class should the need arise.
(( copyright ought ten chris wanstrath ))
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techniques for obscuring sensitive strings in C++
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Basically, anyone with access to your program and a debugger can and will find the key in the application if they want to.
But, if you just want to make sure the key doesn't show up when running strings on your binary, you could for instance make sure that the key is no...
Pandas dataframe get first row of each group
I have a pandas DataFrame like following.
5 Answers
5
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Are “while(true)” loops so bad? [closed]
...ed to read: it's got an extra else block, the actOnInput is more indented, and if you're trying to work out what happens when testCondition returns true, you need to look carefully through the rest of the block to check that there isn't something after the else block which would occur whether runnin...
Init method in Spring Controller (annotation version)
I'm converting a controller to the newer annotation version. In the old version I used to specify the init method in springmvc-servlet.xml using:
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POST request send json data java HttpUrlConnection
I have developed a java code that convert the following cURL to java code using URL and HttpUrlConnection.
the curl is :
5...
SQL select only rows with max value on a column [duplicate]
...d the same "max" as numeric comparison of the two numbers and it's easy to convert back to the original number using the substring function (which is available in one form or another pretty much everywhere).
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How to do date/time comparison
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The following solved my problem of converting string into date
package main
import (
"fmt"
"time"
)
func main() {
value := "Thu, 05/19/11, 10:47PM"
// Writing down the way the standard time would look like formatted our way
layout := "...