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How to initialize array to 0 in C?
...an there are elements or members of an aggregate, or fewer characters in a string literal used to initialize an array of known size than there are elements in the array, the remainder of the aggregate shall be initialized implicitly the same as objects that have static storage duration
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What is the maximum length of a Push Notification alert text?
...kes up 20 characters (20 bytes), leaving 236 bytes to put inside the alert string. With ASCII that will be 236 characters, and could be lesser with UTF8 and UTF16.
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Why doesn't “System.out.println” work in Android?
...t with your log tag it's probably best to define it once as a static final String somewhere.
Log.d(MyActivity.LOG_TAG,"Application started");
There are five one-letter methods in Log corresponding to the following levels:
e() - Error
w() - Warning
i() - Information
d() - Debug
v() - Verbose
wtf...
extra qualification error in C++
...Deserializer
{
Value JSONDeserializer::ParseValue(TDR type, const json_string& valueString);
};
This is not valid C++ but Visual Studio seems to accept it. You need to change it to the following code to be able to compile it with a standard compliant compiler (gcc is more compliant to the ...
Divide a number by 3 without using *, /, +, -, % operators
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Use itoa to convert to a base 3 string. Drop the last trit and convert back to base 10.
// Note: itoa is non-standard but actual implementations
// don't seem to handle negative when base != 10.
int div3(int i) {
char str[42];
sprintf(str, "%d", IN...
Creating a daemon in Linux
...are necessary, these can be encoded by prefixing individual log lines with strings like "<4>" (for log level 4 "WARNING" in the syslog priority scheme), following a similar style as the Linux kernel's printk() level system. For details, see sd-daemon(3) and systemd.exec(5).
To learn mor...
How to detect when WIFI Connection has been established in Android?
...Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (action.equals(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION)) {
if (intent.getBooleanExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, false)) {
//do stuff
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Is there a limit to the length of a GET request? [duplicate]
... as there is no specified limit in the RFC. It'd be safe to use up to 2000 characters (IE's limit.) If you are anywhere near this length, you should make sure you really need URIs that long, maybe an alternative design could get around that.
URIs should be readable, even when used to send data.
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How do you compare structs for equality in C?
... do the wrong thing at application level. For example, should two UNICODE_STRING structs in Windows be compared shallowly or deeply?
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Build an ASCII chart of the most commonly used words in a given text [closed]
...in its hardware control and measurement niche, but really pretty awful for string manipulation.
– Joe Z
Jul 4 '10 at 6:23
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