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std::string formatting like sprintf
I have to format std::string with sprintf and send it into file stream. How can I do this?
40 Answers
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Getting a structural type with an anonymous class's methods from a macro
...an instance of a structural type with the named member. */
def bar(name: String): Any = macro bar_impl
def bar_impl(c: Context)(name: c.Expr[String]) = {
import c.universe._
val anon = TypeName(c.freshName)
// next week, val q"${s: String}" = name.tree
val Literal(Constant(s: St...
Pass Additional ViewData to a Strongly-Typed Partial View
...<div class="row titleBlock">
<h1>@ViewData["HeaderName"].ToString()</h1>
<h5>@ViewData["TitleName"].ToString()</h5>
</div>
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How to start new activity on button click
...onCreate(Bundle savedInstanceState) {
Intent intent = getIntent();
String value = intent.getStringExtra("key"); //if it's a string you stored.
}
Don't forget to add your new activity in the AndroidManifest.xml:
<activity android:label="@string/app_name" android:name="NextActivity"/>...
How to tell PowerShell to wait for each command to end before starting the next?
...Depending on the need, I will typically pipe to Out-Null, Out-Default, Out-String or Out-String -Stream. Here is a long list of some other output options.
# Saving output as a string to a variable.
$output = ping.exe example.com | Out-String
# Filtering the output.
ping stackoverflow.com | where { ...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
... rule. In this example:
The first set of brackets - ([0-9]+) - matches a string with a minimum of 1 character in length and with only numeric values (i.e. 0-9). This can be referenced with $1 in the right hand side of the rule
The second set of parentheses matches a string with a minimum of 1 char...
What is a good Hash Function?
...l, with an order of magnitude more collisions than we want. In particular, strings that differ only in the last 4 bytes can collide easily. If you have a 30 character string, that differ in the last 4 bytes, after 28 bytes have been processes, the hashes differ only in the last 2 bytes. That means y...
How to convert a byte array to a hex string in Java?
...c 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;
hexChars[j * 2] = HEX_ARRAY[v >>> 4];
...
How expensive is RTTI?
...endl;
Standard RTTI is expensive because it relies on doing a underlying string compare and thus the speed of RTTI can vary depending on the class name length.
The reason why string compares are used is to make it work consistently across library/DLL boundaries. If you build your application stat...
How do I get a Cron like scheduler in Python? [closed]
...None of the listed solutions even attempt to parse a complex cron schedule string. So, here is my version, using croniter. Basic gist:
schedule = "*/5 * * * *" # Run every five minutes
nextRunTime = getNextCronRunTime(schedule)
while True:
roundedDownTime = roundDownTime()
if (roundedDow...