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How to verify if a file exists in a batch file?
...hat the /c /d /h /e /i /y means:
/C Continues copying even if errors occur.
/D:m-d-y Copies files changed on or after the specified date.
If no date is given, copies only those files whose
source time is newer than the destination time.
/H ...
Is there a benefit to defining a class inside another class in Python?
...andard classes, is harder to read code, harder to understand code, and odd errors that are terribly difficult to understand without being intimately familiar with why the 'class' scope is entirely different to any other python scope.
...
What is the difference between atomic / volatile / synchronized?
...ame time.
Using volatile variables reduces the risk of memory consistency errors, because any write to a volatile variable establishes a happens-before relationship with subsequent reads of that same variable.
This means that changes to a volatile variable are always visible to other threads. Wha...
Can Visual Studio 2012 be installed side-by-side w/ Visual Studio 2010?
... previously working 4.0 code starts bombing out with an "Object Reference" error on a line that only contains a comment.
– mclark1129
Apr 24 '12 at 12:31
8
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Android adb “Unable to open sync connection!”
...files" issue. I manually tried to install the app when getting the "sync" error above and that's when I got the "too many open files" clue. one brute workaround, based on some old posts, seems to be to restart the phone, and one google engineer suggested doing it twice, the second time before it g...
How to calculate the running time of my program? [duplicate]
...s in the main method, calendar will be defined two times -> compilation error
– krtek
Mar 5 '11 at 13:35
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How to upload a file in Django? [closed]
...a">
{% csrf_token %}
<p>{{ form.non_field_errors }}</p>
<p>{{ form.docfile.label_tag }} {{ form.docfile.help_text }}</p>
<p>
{{ form.docfile.errors }}
{{ form.docfile }}
</...
CASCADE DELETE just once
...s(1);
INSERT 0 1
-- restricting works
testing=# delete from a where id=1;
ERROR: update or delete on table "a" violates foreign key constraint "b_id_fkey" on table "b"
DETAIL: Key (id)=(1) is still referenced from table "b".
-- find the name of the constraint
testing=# \d b;
Table "public...
Determine if running on a rooted device
...han having this feature fail when it is used (and then show an appropriate error message to the user), I'd prefer an ability to silently check if root is available first, and if not,hide the respective options in the first place.
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Set margins in a LinearLayout programmatically
...ckage android.widget.RelativeLayout.LayoutParams, or else there will be an error.
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