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Traverse all the Nodes of a JSON Object Tree with JavaScript
... target function, whereas o should be the first parameter to the function. Setting it to this (which would be the traverse function) is a bit odd though, but it's not like process uses the this reference anyway. It could just as well have been null.
– Thor84no
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How do I implement interfaces in python?
..., the abc module is indeed built-in to python. It is a little more work to set up some of these patterns because they are largely unneeded in Python due to alternative patterns that are considered 'more Pythonic'. For the vast majority of developers, it would be as you said, 'not used at all'. Howev...
VC DDE（Dynamic Data Exchange）与EXCEL连接 - C/C++ - 清泛网 - 专注C/C++及内核技术
VC DDE（Dynamic Data Exchange）与EXCEL连接 项目中遇到需要通过VC数据处理，并实时监测中间以及最终数据的方式，由于数据量大，并且现有的WINDOWS下现实界面都不能很好的实时显示。WINDOWS DDE功能可能实现项目这个需求。项目中遇到...
When is std::weak_ptr useful?
...:shared_ptr<int> sptr;
// takes ownership of pointer
sptr.reset(new int);
*sptr = 10;
// get pointer to data without taking ownership
std::weak_ptr<int> weak1 = sptr;
// deletes managed object, acquires new pointer
sptr.reset(new int);
*sptr = 5;
/...
Node.js throws “btoa is not defined” error
...characters outside of the Latin1 range.
Therefore, you need to explicitly set the encoding type to latin1 in order for your Node.js shim to match the encoding type of desktop Chrome:
const btoaLatin1 = function(str) { return Buffer.from(str, 'latin1').toString('base64'); }
const atobLatin1 = funct...
Export and Import all MySQL databases at one time
...ll the answers I see on this question can have problems with the character sets in some databases due to the problem of redirecting the exit of mysqldump to a file within the shell operator >.
To solve this problem you should do the backup with a command like this
mysqldump -u root -p --opt --a...
Could I change my name and surname in all previous commits?
...its will be the same as the author). If you want to rewrite those as well, set the GIT_COMMITTER_NAME and GIT_COMMITTER_EMAIL variables.
The standard warning about rewriting history applies; only do it to history that has not yet been shared.
June 2018 Update
The manual now includes a solution, u...
How can I declare optional function parameters in Javascript? [duplicate]
...fault).
With ES5:
function myFunc(a,b) {
b = b || 0;
// b will be set either to b or to 0.
}
This works as long as all values you explicitly pass in are truthy.
Values that are not truthy as per MiniGod's comment: null, undefined, 0, false, ''
It's pretty common to see JavaScript librari...
How to merge every two lines into one from the command line?
I have a text file with the following format. The first line is the "KEY" and the second line is the "VALUE".
21 Answers
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How can I tell if my server is serving GZipped content?
I have a webapp on a NGinx server. I set gzip on in the conf file and now I'm trying to see if it works. YSlow says it's not, but 5 out of 6 websites that do the test say it is. How can I get a definite answer on this and why is there a difference in the results?
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