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Best way to alphanumeric check in JavaScript
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You don't need to do it one at a time. Just do a test for any that are not alpha-numeric. If one is found, the validation fails.
function validateCode(){
var TCode = document.getElementById('TCode').value;
if( /[^a-zA-Z0-9]/.test( TCode ) ) {
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What is the aspnet_client folder for under the IIS structure?
...un by things like Windows Update/AddRemove Windows components/IIS. So sometimes even if you do delete it, it can come back randomly. There may be a way to stop this behavior, but I haven't found it (maybe changing the application version to .NET 2 would do it actually).
So unless you're using cert...
What is the best way to concatenate two vectors?
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@boycy No. It is amortized constant time to push_back one element. To push back n elements is O(n)
– Konrad Lindenbach
Mar 12 '16 at 1:47
1
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Add column with constant value to pandas dataframe [duplicate]
...st store a column of lists, ensure not to copy the same reference multiple times.
# Wrong
df['new'] = [[]] * len(df)
# Right
df['new'] = [[] for _ in range(len(df))]
Generating a copy: df.assign(new=0)
If you need a copy instead, use DataFrame.assign:
df.assign(new='y')
A B C new
0 x...
How to increase scrollback buffer size in tmux?
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The history limit is a pane attribute that is fixed at the time of pane creation and cannot be changed for existing panes. The value is taken from the history-limit session option (the default value is 2000).
To create a pane with a different value you will need to set the appropria...
how can you easily check if access is denied for a file in .NET?
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I have done this countless times in the past, and nearly every time I've done it I was wrong to even make the attempt.
File permissions (even file existence) are volatile — they can change at any time. Thanks to Murphy's Law this especially include...
How to test a merge without actually merging first
...'t know exactly if it is your case, but your question remember me that sometimes I start a feature, I commit over the days and I merge the develop on it many times.
On this point I lose the control over the exact files I changed and I will only know it when my feature were closed and my code go to...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
... that case, * vs col1, .., coln doesn't matter (but it DOES for programmer time, since * is shorter!).
– Matt Rogish
Sep 15 '08 at 19:23
4
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Extract substring in Bash
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@jonnyB, Some time in the past that worked. I am told by my coworkers it stopped, and they changed it to be a sed command or something. Looking at it in the history, I was running it in a sh script, which was probably dash. At this point I...
How to locate a file in Solution Explorer in Visual Studio 2010?
I have a huge solution with multiple projects. Sometime I need to navigate to a file in Solution Explorer . Using the VS 2010 ' Navigate To ' feature I can open any file by name in Visual Studio 2010 but I want to be able to select the file in Solution Explorer as well?
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