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Turning a Comma Separated string into individual rows
...SomeID
-- OPTION (maxrecursion 0)
-- normally recursion is limited to 100. If you know you have very long
-- strings, uncomment the option
Output
SomeID | OtherID | DataItem
--------+---------+----------
1 | 9 | 18
1 | 9 | 20
1 | 9 | 22 ...
ConcurrentHashMap vs Synchronized HashMap
What is the difference between using the wrapper class, SynchronizedMap , on a HashMap and ConcurrentHashMap ?
12 Ans...
How to copy file from HDFS to the local file system
...
I see. You can actually use hdfs cat command if you wish to see the file's content or open the file on the webui. This will save you from downloading the file to your local fs. You are welcome. And if you are 100% satisfied with the answers to your questions you can mar...
PHP: merge two arrays while keeping keys instead of reindexing?
...VERY careful with this! The + operator is not an addition, it's a union. If the keys don't overlap then all is good, but if they do...
– GordonM
May 3 '12 at 15:46
3
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How to list the properties of a JavaScript object?
...r keys = Object.keys(myObject);
The above has a full polyfill but a simplified version is:
var getKeys = function(obj){
var keys = [];
for(var key in obj){
keys.push(key);
}
return keys;
}
Alternatively replace var getKeys with Object.prototype.keys to allow you to call .keys(...
How do I make Git treat a file as binary?
...attributes. Put something like this in your .gitattributes file (create it if it doesn't exist):
*.sln binary
*.suo binary
*.vcxproj binary
Here binary is actually a predefined macro, equivalent to -diff -merge -text.
If you want to still be able to see the diff, you can use:
*.sln -merge -text...
Using PropertyInfo to find out the property type
...PropertyInfo propertyInfo in data.GetType().GetProperties())
{
if (propertyInfo.PropertyType == typeof(string))
{
string value = propertyInfo.GetValue(data, null);
if value is not OK
{
return false;
}
}
...
How do you change a repository description on GitHub?
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As of 2020, if you chose the new design in feature preview, meta-information about the repository can be changed by clicking on a cog icon in the right-hand side menu's "About" section:
Upon doing so, a popup will appear where the descr...
How do I check CPU and Memory Usage in Java?
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If you are looking specifically for memory in JVM:
Runtime runtime = Runtime.getRuntime();
NumberFormat format = NumberFormat.getInstance();
StringBuilder sb = new StringBuilder();
long maxMemory = runtime.maxMemory();
lon...
Best way to add comments in erb
How do we add comments in erb files, if we do not want them to be generated into the html content?
7 Answers
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