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How to use sed to replace only the first occurrence in a file?
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This prints #include "newfile.h", we need to escape the quotes. Then we set the done variable to 1, so we don't add more includes.
1;
This means "print out the line" - an empty action defaults to print $0, which prints out the whole line. A one liner and easier to understand than sed IMO :-)
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NSString tokenize in Objective-C
... @Adam, I think what you wanted was componentsSeparatedByCharactersInSet. See answer below.
– Wienke
Aug 28 '12 at 0:01
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Running single test from unittest.TestCase via command line
...class LineBalancingUnitTests(unittest.TestCase):
@classmethod
def setUp(self):
self.maxDiff = None
def test_it_is_sunny(self):
self.assertTrue("a" == "a")
def test_it_is_hot(self):
self.assertTrue("a" != "b")
Runner code:
#! /usr/bin/env python3
# -*- co...
How to turn on (literally) ALL of GCC's warnings?
...st -Wintrinsic-shadow -Wintrinsics-std -Winvalid-memory-model -Winvalid-offsetof -Winvalid-pch -Wjump-misses-init -Wline-truncation -Wliteral-suffix -Wlogical-not-parentheses -Wlogical-op -Wlong-long -Wmain -Wmaybe-uninitialized -Wmemset-transposed-args -Wmissing-braces -Wmissing-declarations -Wmiss...
Facebook API “This app is in development mode”
...useful in future.
STEP 1:
Login to facebook Developer -> Your App
In Settings -> Basic -> Contact Email. (Give any email)
STEP 2:
And in 'App Review' Tab : change
Do you want to make this app and all its live features available to the general public? Yes
And you app will be live now...
Python strptime() and timezones?
...n aware datetime object will be produced. The tzinfo of the result will be set to a timezone instance.
Note that this doesn't work with %Z, so the case is important. See the following example:
In [1]: from datetime import datetime
In [2]: start_time = datetime.strptime('2018-04-18-17-04-30-AEST'...
git push says “everything up-to-date” even though I have local changes
...r latest commit is not a branch head.
Warning: the following does a git reset --hard: make sure to use git stash first if you want to save your currently modified files.
$ git log -1
# note the SHA-1 of latest commit
$ git checkout master
# reset your branch head to your previously detached commit...
using jquery $.ajax to call a PHP function
... the corresponding value should point to the method to invoke, e.g.:
if(isset($_POST['action']) && !empty($_POST['action'])) {
$action = $_POST['action'];
switch($action) {
case 'test' : test();break;
case 'blah' : blah();break;
// ...etc...
}
}
I belie...
Path.Combine absolute with relative path strings
... editor after snippets, if snippets enabled
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StackExchange.using("snippets", function() {
createEditor();
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else {
createEditor();
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What should I do when 'svn cleanup' fails?
I have a lot of changes in a working folder, and something screwed up trying to do an update.
30 Answers
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