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Regex for numbers only
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Use the beginning and end anchors.
Regex regex = new Regex(@"^\d$");
Use "^\d+$" if you need to match more than one digit.
Note that "\d" will match [0-9] and other digit characters like the Eastern Arabic numerals ٠١٢٣٤٥٦٧٨٩. ...
How do I choose between Semaphore and SemaphoreSlim?
... documentation states that the SemaphoreSlim is a lightweight alternative and doesn't use Windows Kernel semaphores. This resource states that the SemaphoreSlim is much faster. In what situations does the SemaphoreSlim make more sense over the Semaphore and vice versa?
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What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?
What is the difference between the remap , noremap , nnoremap and vnoremap mapping commands in Vim?
3 Answers
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How to not run an example using roxygen2?
... relies on having a Bing Maps Key. Obviously I'd rather not publish mine, and the examples fail without one.
4 Answers
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how to hide a vertical scroll bar when not needed
I have a textarea which is contained in a div as I have jquery hint and wanted to use opacity without changing the border.
There is a visible vertical scroll bar how I only want this displayed when I am typing in the text field and it goes beyond the container. I have tried overflow: auto; but does ...
Write to .txt file?
...this to the file";
fprintf(f, "Some text: %s\n", text);
/* print integers and floats */
int i = 1;
float py = 3.1415927;
fprintf(f, "Integer: %d, float: %f\n", i, py);
/* printing single chatacters */
char c = 'A';
fprintf(f, "A character: %c\n", c);
fclose(f);
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How does one use rescue in Ruby without the begin and end block
I know of the standard technique of having a begin rescue end
5 Answers
5
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How to declare a friend assembly?
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And it is damn irritating to see the MSDN documentation (msdn.microsoft.com/en-us/library/…) mention ridiculously short public key which almost look like public key token to me.
– Hemant
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Why is a 3-way merge advantageous over a 2-way merge?
Wikipedia says a 3-way merge is less error-prone than a 2-way merge, and often times doesn't need user intervention. Why is this the case?
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javax.xml.bind.UnmarshalException: unexpected element (uri:“”, local:“Group”)
...e second solution , @XmlRootElement(name="Group"). My class name is Group, and XML root element is Group, why I still need name="Group"
– user496949
Mar 5 '11 at 11:15
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