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Namespace + functions versus static methods on a class
...you can avoid mentioning it, if you use the keyword "using":
#include <string>
#include <vector>
// Etc.
{
using namespace std ;
// Now, everything from std is accessible without qualification
string s ; // Ok
vector v ; // Ok
}
string ss ; // COMPILATION ERROR
vector vv ;...
Creation timestamp and last update timestamp with Hibernate and MySQL
...ate LocalDateTime createdOn;
@Column(name = "created_by")
private String createdBy;
@Column(name = "updated_on")
@UpdateTimestamp
private LocalDateTime updatedOn;
@Column(name = "updated_by")
private String updatedBy;
//Getters and setters omitted for brevity
}
...
In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
...
What you are talking about is called dot sourcing. And it's evil. But no worries, there is a better and easier way to do what you are wanting with modules (it sounds way scarier than it is). The major benefit of using modules is that you can unload them fr...
'Missing contentDescription attribute on image' in XML
...e android:contentDescription
for my ImageView
android:contentDescription="@string/desc"
Android Lint support in ADT 16 throws this warning to ensure that
image widgets provide a contentDescription
This defines text that briefly describes the content of the view. This
property is used primarily for a...
Most efficient way to concatenate strings in JavaScript?
...loop that has many iterations, and in each iteration, I am creating a huge string with many += operators. Is there a more efficient way to create a string? I was thinking about creating a dynamic array where I keep adding strings to it and then do a join. Can anyone explain and give an example of ...
Linux find file names with given string
... files in the current directory and subdirectories whose name contains the string "John". I know that grep can match the content in the files, but I have no idea how to use it with file names. Any help would be appreciated.
...
Running JAR file on Windows
...
Easiest route is probably upgrading or re-installing the Java Runtime Environment (JRE).
Or this:
Open the Windows Explorer, from the Tools select 'Folder Options...'
Click the File Types tab, scroll down and select JAR File type.
Press the Advanced button.
In the Edi...
Convert Newtonsoft.Json.Linq.JArray to a list of specific object type
...= ((JArray)array).Select(x => new SelectableEnumItem
{
FirstName = (string)x["first_name"],
Selected = (bool)x["selected"]
}).ToList();
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How to evaluate a math expression given in string form?
I'm trying to write a Java routine to evaluate math expressions from String values like:
25 Answers
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Java HashMap performance optimization / alternative
...better for my particular set of data". Like, suppose you were working with strings, and you took the length of the string for the hash value. (Not how Java's String.hashCode works, but I'm just making up a simple example.) If your strings have widely varying lengths, from 1 to 10,000, and are fairly...