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How to convert a byte array to a hex string in Java?
...swer, this is the function I currently use:
private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
public static String bytesToHex(byte[] bytes) {
char[] hexChars = new char[bytes.length * 2];
for (int j = 0; j < bytes.length; j++) {
int v = bytes[j] & 0xFF;...
Capitalize or change case of an NSString in Objective-C
...ingString:lowercase];
}
- (NSString *)realSentenceCapitalizedString {
__block NSMutableString *mutableSelf = [NSMutableString stringWithString:self];
[self enumerateSubstringsInRange:NSMakeRange(0, [self length])
options:NSStringEnumerationBySentences
...
How to search in array of object in mongodb
...
Use $elemMatch to find the array of particular object
db.users.findOne({"_id": id},{awards: {$elemMatch: {award:'Turing Award', year:1977}}})
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Defining a variable with or without export
... edited May 8 '18 at 16:27
4wk_
1,83933 gold badges2626 silver badges4242 bronze badges
answered Jul 21 '09 at 9:56
...
Using Git, how could I search for a string across all branches?
...p $1 } # last grep to keep grep color highlight
– AFP_555
Feb 5 '19 at 2:27
...
How do I concatenate two strings in C?
...-terminator.
char* concat(const char *s1, const char *s2)
{
const size_t len1 = strlen(s1);
const size_t len2 = strlen(s2);
char *result = malloc(len1 + len2 + 1); // +1 for the null-terminator
// in real code you would check for errors in malloc here
memcpy(result, s1, len1);
...
Draw in Canvas by finger, Android
... mPath = new Path();
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
circlePaint = new Paint();
circlePath = new Path();
circlePaint.setAntiAlias(true);
circlePaint.setColor(Color.BLUE);
circlePaint.setStyle(Paint.Style.STROKE...
Is there a HTML opposite to ?
...ipt" charset="utf-8">
$(document).ready(function() {
$.get('_test.html', function(html) {
$('p:first').after(html);
});
});
</script>
</head>
<body>
<p>This is content at the top of the page.</p>
<p>This is content at th...
Regex replace uppercase with lowercase letters
...rt, these are the docs for the format strings like \L: boost.org/doc/libs/1_44_0/libs/regex/doc/html/boost_regex/…
– Alex K.
Apr 3 '16 at 13:09
4
...
How to programmatically take a screenshot on Android?
... save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in an Activity):
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
//...