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Check if a string matches a regex in Bash script
...]] && echo "yes"
Or more a accurate test:
[[ $date =~ ^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$ ]] && echo "yes"
# |^^^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^^^^^ ^^^^^^ |
# | | ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ |
# | | | ...
python pandas dataframe to dictionary
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12 Answers
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How can I shuffle an array? [duplicate]
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1006
Use the modern version of the Fisher–Yates shuffle algorithm:
/**
* Shuffles array in pla...
What is the best way to check for Internet connectivity using .NET?
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edited Sep 9 '19 at 11:27
T.Todua
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onchange event on input type=range is not triggering in firefox while dragging
...h from the mouse and the keyboard.
However, oninput is not supported in IE10, so your best bet is to combine the two event handlers, like this:
<span id="valBox"></span>
<input type="range" min="5" max="10" step="1"
oninput="showVal(this.value)" onchange="showVal(this.value)">...
How to select a single field for all documents in a MongoDB collection?
In my MongoDB, I have a student collection with 10 records having fields name and roll . One record of this collection is:
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Check if string begins with something? [duplicate]
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Use stringObject.substring
if (pathname.substring(0, 6) == "/sub/1") {
// ...
}
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How do I call a dynamically-named method in Javascript?
...x = "populate_";
// Call function:
window[method_prefix + method_name](arg1, arg2);
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How do I find the location of my Python site-packages directory?
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How to set environment variable or system property in spring tests?
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127
You can initialize the System property in a static initializer:
@RunWith(SpringJUnit4ClassRun...