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Why does substring slicing with index out of range work?
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Part of what's confusing here is that strings behave a little differently from lists. Look what happens when you do the same thing to a list:
>>> [0, 1, 2, 3, 4, 5][3]
3
>>> [0, 1, 2, 3, 4, 5][3:4]
[3]
Here the difference is obvious. In the case of strings, the results appear ...
Compare integer in bash, unary operator expected
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Your problem arises from the fact that $i has a blank value when your statement fails. Always quote your variables when performing comparisons if there is the slightest chance that one of them may be empty, e.g.:
if [ "$i" -ge 2 ] ; then
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Javascript: get package.json data in gulpfile.js
Not a gulp-specific question per-se, but how would one get info from the package.json file within the gulpfile.js; For instance, I want to get the homepage or the name and use it in a task.
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NUnit vs. xUnit
...tes a new instance of the test class and then runs all of the tests method from the same instance. Whereas xUnit.net creates a new instance of the test class for very each of the test methods.. Therefore, one cannot use fields or properties to share data among test methods which is a bad practice, a...
image.onload event and browser cache
...ry time. There is no need to ever check .complete when create a new image from scratch like this.
– jfriend00
Sep 10 '12 at 17:24
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Saving vim macros
... They would have to be escaped properly.
So to save a macro you can do:
From normal mode: qq
enter whatever commands
From normal mode: q
open .vimrc
"qp to insert the macro into your let @q = '...' line
share
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Get exception description and stack trace which caused an exception, all as a string
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This asks specifically how to get the traceback from the exception object as you have done here: stackoverflow.com/questions/11414894/…
– Ciro Santilli 郝海东冠状病六四事件法轮功
May 18 '19 at 13:09
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How can I ask the Selenium-WebDriver to wait for few seconds in Java?
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return foo;
};
fluentWait function returns your found web element.
From the documentation on fluentWait:
An implementation of the Wait interface that may have its timeout and polling interval configured on the fly.
Each FluentWait instance defines the maximum amount of time to wait for a con...
Forward declaring an enum in C++
...ill have been chosen - it could be a char or an int, or something else.
From Section 7.2.5 of the ISO C++ Standard:
The underlying type of an enumeration is an integral type that can represent all the enumerator values defined in the enumeration. It is implementation-defined which integral ty...
Do declared properties require a corresponding instance variable?
...ponding @property. The Synthesizer only knows what type of attribute it is from the @property specification. The synthesize statement also allows you to rename properties, so that you can refer to a property by one name (shorthand) inside your code, but outside in the .h file use the full name. Howe...