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Access Control Request Headers, is added to header in AJAX request with jQuery
...function(request) {
request.setRequestHeader("Authority", authorizationToken);
},
url: "entities",
data: "json=" + escape(JSON.stringify(createRequestObject)),
processData: false,
success: function(msg) {
$("#results").append("The result =" + StringifyPretty(msg));
}
});
...
What exactly does an #if 0 … #endif block do?
...
When the preprocessor sees #if it checks whether the next token has a non-zero value. If it does, it keeps the code around for the compiler. If it doesn't, it gets rid of that code so the compiler never sees it.
If someone says #if 0 they are effectively commenting out the code s...
How to generate a random string of a fixed length in Go?
...n terms of speed, and it will definitely help in terms of memory usage and allocations.
func RandStringBytesMaskImprSrcSB(n int) string {
sb := strings.Builder{}
sb.Grow(n)
// A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
for i, cache, remain := n-1, sr...
How to embed small icon in UILabel
...tKit. Some sample code:
NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
attachment.image = [UIImage imageNamed:@"MyIcon.png"];
NSAttributedString *attachmentString = [NSAttributedString attributedStringWithAttachment:attachment];
NSMutableAttributedString *myString= [[NSMutableAtt...
What is a .snk for?
...lobal Assembly Cache (GAC).
The .snk file contains the public and private tokens for your key. When you want to sign some data (or binary) with that key, a checksum is calculated on the data, which is then encrypted with the private token. The encrypted checksum is then added to the data. Anyone ca...
converting Java bitmap to byte array
...
This approach is really wastefull of allocations. Your ByteArrayOutputStream will allocate a byte[] of size equal to the byte[] backing your Bitmap, then ByteArrayOutputStream.toByteArray() will again allocate yet another byte[] of the same size.
...
Dismiss keyboard by touching background of UITableView
...hod:
UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];
And the hideKeyboard method might look like this:
- (void) hideKeyboard {
[textField1 resignFirstResp...
Differences between C++ string == and compare()?
...or==
21.4.8.2 operator==
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT,traits,Allocator>& lhs,
const basic_string<charT,traits,Allocator>& rhs) noexcept;
Returns: lhs.compare(rhs) == 0.
Seems like ...
How is std::function implemented?
... dynamically. The std::function object is always of the same size and will allocate space as needed for the different functors in the heap.
In real life there are different optimizations that provide performance advantages but would complicate the answer. The type could use small object optimizatio...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...happen in a particular order, and some have specific use cases.
Braces as Token Delimiters
The ${var} syntax is primarily used for delimiting ambiguous tokens. For example, consider the following:
$ var1=foo; var2=bar; var12=12
$ echo $var12
12
$ echo ${var1}2
foo2
Braces in Array Expansions
T...