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JavaScript: How do I print a message to the error console?
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18 Answers
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php：获取数组第一个值 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...第一个数组单元的值，如果数组为空则返回 FALSE。
例 1. reset() 例子
01 <?php
02 $array = array('step one', 'step two', 'step three', 'step four');
03 // by default, the pointer is on the first element
04 echo current($array) . "<br />\n"; // "step one"
05 // skip two ste...
'uint32_t' identifier not found error
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115
This type is defined in the C header <stdint.h> which is part of the C++11 standard but ...
What does auto&& tell us?
...tuation. So here's a contrived example:
std::vector<int> global_vec{1, 2, 3, 4};
template <typename T>
T get_vector()
{
return global_vec;
}
template <typename T>
void foo()
{
auto&& vec = get_vector<T>();
auto i = std::begin(vec);
(*i)++;
std::cout <&...
How to Batch Rename Files in a macOS Terminal?
...f there's a chance that your filenames start with -, place -- before them[1]:
mv -- "$f" "${f/_*_/_}"
Note: echo is prepended to mv so as to perform a dry run. Remove it to perform actual renaming.
You can run it from the command line or use it in a script.
"${f/_*_/_}" is an application of bas...
Javascript and regex: split string and keep the separator
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106
Use (positive) lookahead so that the regular expression asserts that the special character exi...
Pure JavaScript Graphviz equivalent [closed]
... code has been pushed to github:
https://github.com/gyuque/livizjs
Update (14/2/2013): another contender has arisen! anybody interested in the subject should definitely take a look at Viz.js's example page and github repo.
Update (7/16/2020): (seven years later) http://webgraphviz.com/ is also great...
Android - Emulator in landscape mode, screen does not rotate
When I switch to landscape mode ( NUMPAD 7 or CTRL + F11 ) the emulator rotates the screen to landscape orientation but the Android OS and none of the apps rotate. So everything is sitting sideways. Is there something in the AVD configuration that needs to be set in order for the device to rotate ...