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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
... @sweisgerber.dev, I'm confused on your first contention. The return value from find will only be zero if titi is at the start of the string. If it's found somewhere else, you'll get a non-zero return value and, if it's not found, you'll get npos which is also non-zero. Assuming I'm right, I'd prefe...
JavaScript for…in vs for
...ed. Worse: You might get unexpected results; it includes members inherited from the prototype chain and the name of methods.
Everything but the properties can be filtered out with .hasOwnProperty. This code sample does what you probably wanted originally:
for (var name in obj) {
if (Object.pro...
Add a tooltip to a div
...oltip to be clickable - this blurs links and tooltips, preventing the user from knowing whether a highlighted word will 1) give them more information or 2) take them to another page entirely. In general, bad practice.
– sscirrus
Apr 14 '14 at 22:33
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Validating IPv4 addresses with regexp
...0-9]|[01]?[0-9][0-9]?)\.
(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)
\b
taken from JGsoft RegexBuddy library
Edit: this (\.|$) part seems wierd
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how to view the contents of a .pem certificate
... am using Java keytool . I have exported a self-signed .pem certificate from my keystore. Is there a command to view the certificate details directly from the .pem file (not of the certificate in the keystore)?
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How do I run a terminal inside of Vim?
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Outdated from August 2011
Check out Conque Shell (also on GitHub). Lets you run any interactive program inside vim, not just a shell.
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How to know the size of the string in bytes?
...w whether to use the Unicode or ASCII class if the data in the string came from a 3rd party file?
– Matthew Lock
Feb 24 '14 at 1:11
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How to check for an undefined or null variable in JavaScript?
...he JSHint syntax checker even provides the eqnull option for this reason.
From the jQuery style guide:
Strict equality checks (===) should be used in favor of ==. The only
exception is when checking for undefined and null by way of null.
// Check for both undefined and null values, for some ...
How to get the last value of an ArrayList
...se an iteration of the list? That doesnt seem very efficient to me. I come from C++, where there are actual front() and back() methods on the list object, that are internally implemented with head and tail references. Is there a similar mechanism in Java?
– Brady
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matplotlib colorbar for scatter
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From the matplotlib docs on scatter 1:
cmap is only used if c is an array of floats
So colorlist needs to be a list of floats rather than a list of tuples as you have it now.
plt.colorbar() wants a mappable object, like...