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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...n, use df['column name'].map(len). So try
df[df['column name'].map(len) < 2]
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Asynchronous vs synchronous execution, what does it really mean? [closed]
... of code) that exists as a unit of work. The operating system can manage multiple threads and assign a thread a piece ("slice") of processor time before switching to another thread to give it a turn to do some work. At its core (pardon the pun), a processor can simply execute a command, it has no co...
Verify object attribute value with mockito
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New feature added to Mockito makes this even easier,
ArgumentCaptor<Person> argument = ArgumentCaptor.forClass(Person.class);
verify(mock).doSomething(argument.capture());
assertEquals("John", argument.getValue().getName());
Take a look at Mockito documentation
In case when there a...
Best way to check if object exists in Entity Framework?
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And in VB If (context.MyEntity.Any(o => o.Id <> idToMAtch)) Then ' This is a match! End If Sorry, this isn't in the code tag, I couldn't figure out how to do it!
– Kevin Morrissey
Mar 13 '13 at 17:56
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Need to handle uncaught exception and send log file
...le.
Start an email app, providing your file as an attachment.
Manifest: filter your activity to be recognized by your exception handler.
Optionally, setup Proguard to strip out Log.d() and Log.v().
Now, here are the details:
(1 & 2) Handle uncaughtException, start send log activity:
public ...
How to properly check if std::function is empty in C++11?
...nction/operator_bool/
Example
// function::operator bool example
#include <iostream> // std::cout
#include <functional> // std::function, std::plus
int main () {
std::function<int(int,int)> foo,bar;
foo = std::plus<int>();
foo.swap(bar);
std::cout << "f...
How to sort by two fields in Java?
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You can use Collections.sort as follows:
private static void order(List<Person> persons) {
Collections.sort(persons, new Comparator() {
public int compare(Object o1, Object o2) {
String x1 = ((Person) o1).getName();
String x2 = ((Person) o2).getName();...
How do I define a method which takes a lambda as a parameter in Java 8?
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Will there be built-in interfaces to be used, or must I create an interface for every lambda I want to take?
– Marius
Nov 28 '12 at 12:10
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How to print a int64_t type in C
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For int64_t type:
#include <inttypes.h>
int64_t t;
printf("%" PRId64 "\n", t);
for uint64_t type:
#include <inttypes.h>
uint64_t t;
printf("%" PRIu64 "\n", t);
you can also use PRIx64 to print in hexadecimal.
cppreference.com has a ful...
Escape @ character in razor view engine
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try <text></text> or @:
– Kasper Skov
Jul 14 '11 at 20:14
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