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Check if database exists in PostgreSQL using shell
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202
I use the following modification of Arturo's solution:
psql -lqt | cut -d \| -f 1 | grep -qw &...
How to check Django version
...nsole and type
>>> import django
>>> django.VERSION
(2, 0, 0, 'final', 0)
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sh: 0: getcwd() failed: No such file or directory on cited drive
... with the same name.
– Jackson
Nov 20 '15 at 18:45
exactly true! nice!
– farhad goodarzi
...
How to convert an IPv4 address into a integer in C#?
...64.233.187.99. That's equivalent to:
64*2^24 + 233*2^16 + 187*2^8 + 99
= 1089059683
And indeed, http://1089059683/ works as expected (at least in Windows, tested with IE, Firefox and Chrome; doesn't work on iPhone though).
Here's a test program to show both conversions, including the network/hos...
Any reason why scala does not explicitly support dependent types?
... Bar }
defined class Foo
scala> val foo1 = new Foo
foo1: Foo = Foo@24bc0658
scala> val foo2 = new Foo
foo2: Foo = Foo@6f7f757
scala> implicitly[foo1.Bar =:= foo1.Bar] // OK: equal types
res0: =:=[foo1.Bar,foo1.Bar] = <function1>
scala> implicitly[foo1.Bar =:= foo2.Bar] // Not O...
Is it safe to assume a GUID will always be unique?
...ow there is a minute possibility of a clash but if I generated a batch of 1000 GUIDs (for example), would it be safe to assume they're all unique to save testing each one?
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
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+500
Uploaded my proposal at github
(Is working with all android versions though view hardware acceleration is strongly recommended for t...
Re-open *scratch* buffer in Emacs?
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201
GNU Emacs default bindings:
C-xb *scratch* RET
or, more verbosely
M-x switch-to-buffe...
Android Webview - Completely Clear the Cache
...arCacheFolder(final File dir, final int numDays) {
int deletedFiles = 0;
if (dir!= null && dir.isDirectory()) {
try {
for (File child:dir.listFiles()) {
//first delete subdirectories recursively
if (child.isDirectory()) {
...
Strtotime() doesn't work with dd/mm/YYYY format
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403
Here is the simplified solution:
$date = '25/05/2010';
$date = str_replace('/', '-', $date);
e...