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Representing null in JSON
...s of type undefined.
JSON2 {"myCount": null}
In this case, myCount is actually defined, albeit its value is null. This is not the same as both "not undefined and not null", and if you were testing for one condition or the other, this might succeed whereas JSON1 would fail.
This is the definitive wa...
C# Convert string from UTF-8 to ISO-8859-1 (Latin1) H
... iso = Encoding.GetEncoding("ISO-8859-9"); Because turkish encoding covers allmost all alphabet extended from Latin.
– Fuat
Aug 31 '18 at 10:55
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Delete with Join in MySQL
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Actually you can use an alias for joined tables, but not for the main table (posts). "DELETE posts FROM posts INNER JOIN projects p ON p.project_id = posts.project_id"
– Weboide
May 29 '12 a...
How make Eclipse/EGit recognize existing repository information after update?
After upgrading Eclipse from Helios to Indigo with EGit plugin 1.0.0, all my projects seem to have lost their metadata about their git repositories, respectively.
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jQuery lose focus event
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Use blur event to call your function when element loses focus :
$('#filter').blur(function() {
$('#options').hide();
});
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What is private bytes, virtual bytes, working set?
...se values are a reliable indicator of how much memory an executable is actually using, and none of them are really appropriate for debugging a memory leak.
Private Bytes refer to the amount of memory that the process executable has asked for - not necessarily the amount it is actually using. They ...
Padding within inputs breaks width 100%
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Looks like it's supported across all major browsers without prefix, and has been for several versoins: caniuse.com/#feat=css3-boxsizing
– Jason
Jan 17 '19 at 13:53
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Showing commits made directly to a branch, ignoring merges in Git
...using git, is there a way to show commits made to a branch, while ignoring all commits that were brought in by merging?
3...
Instantiating a generic class in Java [duplicate]
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This is all great and all ... it certainly works. But ... if all we need is a new Bar instance (since <T> is <Bar>) then reflectively making a Bar instance with Class<Bar> token = Bar.class; and Bar newBar = token....
Checking if a key exists in a JavaScript object?
... testing whether a key exists. What if the key exists but the value is actually undefined?
var obj = { key: undefined };
obj["key"] !== undefined // false, but the key exists!
You should instead use the in operator:
"key" in obj // true, regardless of the actual value
If you want to check if a...