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How do I get the first element from an IEnumerable in .net?
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If you can use LINQ you can use:
var e = enumerable.First();
This will throw an exception though if enumerable is empty: in which case you can use:
var e = enumerable.FirstOrDefault();
FirstOrDefault() will return defau...
SQL update trigger only when column is modified
...t it doesn't seem to work as I would like: I want it to only update the modified information if the QtyToRepair value has been updated... but it doesn't do that.
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Parsing domain from a URL
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parse_url doesn't handle really badly mangled urls very well, but is fine if you generally expect decent urls.
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How can I convert a string to boolean in JavaScript?
...esn't make any implicit type conversions when the compared variables have different types, instead of the equality operator (==).
var isTrueSet = (myValue === 'true');
Don't:
You should probably be cautious about using these two methods for your specific needs:
var myBool = Boolean("false"); ...
Windows batch: echo without new line
...n checking the ERRORLEVEL becomes important as setting set /p= without specifying a variable name will set the ERRORLEVEL to 1.
A better approach would be to just use a dummy variable name like so:
echo | set /p dummyName=Hello World
This will produce exactly what you want without any sneaky stu...
Does VBA have Dictionary Structure?
...ictionary")
or
Dim dict As New Scripting.Dictionary
Example of use:
If Not dict.Exists(key) Then
dict.Add key, value
End If
Don't forget to set the dictionary to Nothing when you have finished using it.
Set dict = Nothing
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Why does 'continue' behave like 'break' in a Foreach-Object?
If I do the following in a PowerShell script:
4 Answers
4
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What is the rationale for fread/fwrite taking size and count as arguments?
...ust taking a buffer and size. The only use for it we could come up with is if you want to read/write an array of structs which aren't evenly divisible by the platform alignment and hence have been padded but that can't be so common as to warrant this choice in design.
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Python matplotlib multiple bars
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Thanks, but if i have 3 bars, it looks good. When I try like 40 bars, it messes up. Can you please update your solution to be more scalable ?
– John Smith
Jan 11 '13 at 2:26
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How to implement a binary tree?
...f getRoot(self):
return self.root
def add(self, val):
if self.root is None:
self.root = Node(val)
else:
self._add(val, self.root)
def _add(self, val, node):
if val < node.v:
if node.l is not None:
self._...