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How can you undo the last git add?
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299
You can use git reset. This will 'unstage' all the files you've added after your last commit.
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How do I get a file extension in PHP?
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28 Answers
28
Active
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Maximum Year in Expiry Date of Credit Card
...her the transaction is approved or not so I wouldn't worry about it.
July 2017: Just had an end user with a card that expired almost 50 years from now.
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How to embed a video into GitHub README.md?
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127
The "Github Flavored Markdown" doesn't support this kind of feature for any page:
An old suppor...
What is the difference between atomic / volatile / synchronized?
...s; that is why volatile is not default.
volatile without synchronization (2)
volatile int i = 0;
void incIBy5() {
i += 5;
}
The same problem as above, but even worse because i is not private. The race condition is still present. Why is it a problem? If, say, two threads run this code simultane...
Polymorphism vs Overriding vs Overloading
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21 Answers
21
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What's the difference between a continuation and a callback?
...umber of functions, any number of times. For example:
var array = [1, 2, 3];
forEach(array, function (element, array, index) {
array[index] = 2 * element;
});
console.log(array);
function forEach(array, callback) {
var length = array.length;
for (var i = 0; i < lengt...
Does Notepad++ show all hidden characters?
In Notepad++ I have set "replace tab with 2 spaces".
5 Answers
5
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Django Setup Default Logging
...dler',
'filename': 'logs/mylog.log',
'maxBytes': 1024*1024*5, # 5 MB
'backupCount': 5,
'formatter':'standard',
},
'request_handler': {
'level':'DEBUG',
'class':'logging.handlers.RotatingFileHandler',
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Merge cells using EPPlus?
...osite? Unmerge cells.
– NikosV
Sep 12 '18 at 15:41
How do I merge columns on the basis of condition?
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